diff --git a/test/functional/feature_abortnode.py b/test/functional/feature_abortnode.py
index 80c3cab5e..9b878e8bf 100755
--- a/test/functional/feature_abortnode.py
+++ b/test/functional/feature_abortnode.py
@@ -29,7 +29,7 @@ class AbortNodeTest(BitcoinTestFramework):
         datadir = get_datadir_path(self.options.tmpdir, 0)
 
         # Deleting the undo file will result in reorg failure
-        os.unlink(os.path.join(datadir, 'regtest', 'blocks', 'rev00000.dat'))
+        os.unlink(os.path.join(datadir, self.chain, 'blocks', 'rev00000.dat'))
 
         # Connecting to a node with a more work chain will trigger a reorg
         # attempt.
diff --git a/test/functional/feature_config_args.py b/test/functional/feature_config_args.py
index 1bc62f660..719b124a6 100755
--- a/test/functional/feature_config_args.py
+++ b/test/functional/feature_config_args.py
@@ -39,7 +39,7 @@ class ConfArgsTest(BitcoinTestFramework):
         if self.is_wallet_compiled():
             with open(inc_conf_file_path, 'w', encoding='utf8') as conf:
                 conf.write("wallet=foo\n")
-            self.nodes[0].assert_start_raises_init_error(expected_msg='Error: Config setting for -wallet only applied on regtest network when in [regtest] section.')
+            self.nodes[0].assert_start_raises_init_error(expected_msg='Error: Config setting for -wallet only applied on %s network when in [%s] section.' % (self.chain, self.chain))
 
         with open(inc_conf_file_path, 'w', encoding='utf-8') as conf:
             conf.write('regtest=0\n') # mainnet
@@ -134,7 +134,7 @@ class ConfArgsTest(BitcoinTestFramework):
         # Check that using non-existent datadir in conf file fails
         conf_file = os.path.join(default_data_dir, "bitcoin.conf")
 
-        # datadir needs to be set before [regtest] section
+        # datadir needs to be set before [chain] section
         conf_file_contents = open(conf_file, encoding='utf8').read()
         with open(conf_file, 'w', encoding='utf8') as f:
             f.write("datadir=" + new_data_dir + "\n")
@@ -146,17 +146,17 @@ class ConfArgsTest(BitcoinTestFramework):
         os.mkdir(new_data_dir)
         self.start_node(0, ['-conf='+conf_file, '-wallet=w1'])
         self.stop_node(0)
-        assert os.path.exists(os.path.join(new_data_dir, 'regtest', 'blocks'))
+        assert os.path.exists(os.path.join(new_data_dir, self.chain, 'blocks'))
         if self.is_wallet_compiled():
-            assert os.path.exists(os.path.join(new_data_dir, 'regtest', 'wallets', 'w1'))
+            assert os.path.exists(os.path.join(new_data_dir, self.chain, 'wallets', 'w1'))
 
         # Ensure command line argument overrides datadir in conf
         os.mkdir(new_data_dir_2)
         self.nodes[0].datadir = new_data_dir_2
         self.start_node(0, ['-datadir='+new_data_dir_2, '-conf='+conf_file, '-wallet=w2'])
-        assert os.path.exists(os.path.join(new_data_dir_2, 'regtest', 'blocks'))
+        assert os.path.exists(os.path.join(new_data_dir_2, self.chain, 'blocks'))
         if self.is_wallet_compiled():
-            assert os.path.exists(os.path.join(new_data_dir_2, 'regtest', 'wallets', 'w2'))
+            assert os.path.exists(os.path.join(new_data_dir_2, self.chain, 'wallets', 'w2'))
 
 
 if __name__ == '__main__':
diff --git a/test/functional/feature_filelock.py b/test/functional/feature_filelock.py
index 93fef737e..be1c044aa 100755
--- a/test/functional/feature_filelock.py
+++ b/test/functional/feature_filelock.py
@@ -19,7 +19,7 @@ class FilelockTest(BitcoinTestFramework):
         self.nodes[0].wait_for_rpc_connection()
 
     def run_test(self):
-        datadir = os.path.join(self.nodes[0].datadir, 'regtest')
+        datadir = os.path.join(self.nodes[0].datadir, self.chain)
         self.log.info("Using datadir {}".format(datadir))
 
         self.log.info("Check that we can't start a second bitcoind instance using the same datadir")
diff --git a/test/functional/feature_loadblock.py b/test/functional/feature_loadblock.py
index bd4b271ca..7f1e8f5ba 100755
--- a/test/functional/feature_loadblock.py
+++ b/test/functional/feature_loadblock.py
@@ -38,7 +38,7 @@ class LoadblockTest(BitcoinTestFramework):
         cfg_file = os.path.join(data_dir, "linearize.cfg")
         bootstrap_file = os.path.join(self.options.tmpdir, "bootstrap.dat")
         genesis_block = self.nodes[0].getblockhash(0)
-        blocks_dir = os.path.join(data_dir, "regtest", "blocks")
+        blocks_dir = os.path.join(data_dir, self.chain, "blocks")
         hash_list = tempfile.NamedTemporaryFile(dir=data_dir,
                                                 mode='w',
                                                 delete=False,
diff --git a/test/functional/feature_logging.py b/test/functional/feature_logging.py
index 36d6d70fc..1bae29b30 100755
--- a/test/functional/feature_logging.py
+++ b/test/functional/feature_logging.py
@@ -16,7 +16,7 @@ class LoggingTest(BitcoinTestFramework):
         self.setup_clean_chain = True
 
     def relative_log_path(self, name):
-        return os.path.join(self.nodes[0].datadir, "regtest", name)
+        return os.path.join(self.nodes[0].datadir, self.chain, name)
 
     def run_test(self):
         # test default log file name
diff --git a/test/functional/feature_pruning.py b/test/functional/feature_pruning.py
index e1e0f0053..21b6b299f 100755
--- a/test/functional/feature_pruning.py
+++ b/test/functional/feature_pruning.py
@@ -101,7 +101,7 @@ class PruneTest(BitcoinTestFramework):
     def setup_network(self):
         self.setup_nodes()
 
-        self.prunedir = os.path.join(self.nodes[2].datadir, 'regtest', 'blocks', '')
+        self.prunedir = os.path.join(self.nodes[2].datadir, self.chain, 'blocks', '')
 
         connect_nodes(self.nodes[0], 1)
         connect_nodes(self.nodes[1], 2)
@@ -279,7 +279,7 @@ class PruneTest(BitcoinTestFramework):
             assert_equal(ret, node.getblockchaininfo()['pruneheight'])
 
         def has_block(index):
-            return os.path.isfile(os.path.join(self.nodes[node_number].datadir, "regtest", "blocks", "blk{:05}.dat".format(index)))
+            return os.path.isfile(os.path.join(self.nodes[node_number].datadir, self.chain, "blocks", "blk{:05}.dat".format(index)))
 
         # should not prune because chain tip of node 3 (995) < PruneAfterHeight (1000)
         assert_raises_rpc_error(-1, "Blockchain is too short for pruning", node.pruneblockchain, height(500))
diff --git a/test/functional/interface_rpc.py b/test/functional/interface_rpc.py
index e460db39f..3b3b5bb0c 100755
--- a/test/functional/interface_rpc.py
+++ b/test/functional/interface_rpc.py
@@ -33,7 +33,7 @@ class RPCInterfaceTest(BitcoinTestFramework):
         command = info['active_commands'][0]
         assert_equal(command['method'], 'getrpcinfo')
         assert_greater_than_or_equal(command['duration'], 0)
-        assert_equal(info['logpath'], os.path.join(self.nodes[0].datadir, 'regtest', 'debug.log'))
+        assert_equal(info['logpath'], os.path.join(self.nodes[0].datadir, self.chain, 'debug.log'))
 
     def test_batch_request(self):
         self.log.info("Testing basic JSON-RPC batch request...")
diff --git a/test/functional/mempool_persist.py b/test/functional/mempool_persist.py
index ef84de5a1..d3690b245 100755
--- a/test/functional/mempool_persist.py
+++ b/test/functional/mempool_persist.py
@@ -117,8 +117,8 @@ class MempoolPersistTest(BitcoinTestFramework):
         wait_until(lambda: self.nodes[0].getmempoolinfo()["loaded"])
         assert_equal(len(self.nodes[0].getrawmempool()), 5)
 
-        mempooldat0 = os.path.join(self.nodes[0].datadir, 'regtest', 'mempool.dat')
-        mempooldat1 = os.path.join(self.nodes[1].datadir, 'regtest', 'mempool.dat')
+        mempooldat0 = os.path.join(self.nodes[0].datadir, self.chain, 'mempool.dat')
+        mempooldat1 = os.path.join(self.nodes[1].datadir, self.chain, 'mempool.dat')
         self.log.debug("Remove the mempool.dat file. Verify that savemempool to disk via RPC re-creates it")
         os.remove(mempooldat0)
         self.nodes[0].savemempool()
diff --git a/test/functional/mining_basic.py b/test/functional/mining_basic.py
index bfeaa76c7..8262e3059 100755
--- a/test/functional/mining_basic.py
+++ b/test/functional/mining_basic.py
@@ -70,7 +70,7 @@ class MiningTest(BitcoinTestFramework):
         self.log.info('getmininginfo')
         mining_info = node.getmininginfo()
         assert_equal(mining_info['blocks'], 200)
-        assert_equal(mining_info['chain'], 'regtest')
+        assert_equal(mining_info['chain'], self.chain)
         assert 'currentblocktx' not in mining_info
         assert 'currentblockweight' not in mining_info
         assert_equal(mining_info['difficulty'], Decimal('4.656542373906925E-10'))
diff --git a/test/functional/rpc_scantxoutset.py b/test/functional/rpc_scantxoutset.py
index f31e4f43b..c3d34be0d 100755
--- a/test/functional/rpc_scantxoutset.py
+++ b/test/functional/rpc_scantxoutset.py
@@ -54,7 +54,7 @@ class ScantxoutsetTest(BitcoinTestFramework):
 
         self.log.info("Stop node, remove wallet, mine again some blocks...")
         self.stop_node(0)
-        shutil.rmtree(os.path.join(self.nodes[0].datadir, "regtest", 'wallets'))
+        shutil.rmtree(os.path.join(self.nodes[0].datadir, self.chain, 'wallets'))
         self.start_node(0)
         self.nodes[0].generate(110)
 
diff --git a/test/functional/tool_wallet.py b/test/functional/tool_wallet.py
index 32ef25745..d2629ff1e 100755
--- a/test/functional/tool_wallet.py
+++ b/test/functional/tool_wallet.py
@@ -27,7 +27,7 @@ class ToolWalletTest(BitcoinTestFramework):
 
     def bitcoin_wallet_process(self, *args):
         binary = self.config["environment"]["BUILDDIR"] + '/src/bitcoin-wallet' + self.config["environment"]["EXEEXT"]
-        args = ['-datadir={}'.format(self.nodes[0].datadir), '-regtest'] + list(args)
+        args = ['-datadir={}'.format(self.nodes[0].datadir), '-chain=%s' % self.chain] + list(args)
         return subprocess.Popen([binary] + args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
 
     def assert_raises_tool_error(self, error, *args):
@@ -198,7 +198,7 @@ class ToolWalletTest(BitcoinTestFramework):
         self.log.debug('Wallet file shasum unchanged\n')
 
     def run_test(self):
-        self.wallet_path = os.path.join(self.nodes[0].datadir, 'regtest', 'wallets', 'wallet.dat')
+        self.wallet_path = os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat')
         self.test_invalid_tool_commands_and_args()
         # Warning: The following tests are order-dependent.
         self.test_tool_wallet_info()
diff --git a/test/functional/wallet_backup.py b/test/functional/wallet_backup.py
index bb835dc81..16c69f304 100755
--- a/test/functional/wallet_backup.py
+++ b/test/functional/wallet_backup.py
@@ -107,9 +107,9 @@ class WalletBackupTest(BitcoinTestFramework):
         self.stop_node(2)
 
     def erase_three(self):
-        os.remove(os.path.join(self.nodes[0].datadir, 'regtest', 'wallets', 'wallet.dat'))
-        os.remove(os.path.join(self.nodes[1].datadir, 'regtest', 'wallets', 'wallet.dat'))
-        os.remove(os.path.join(self.nodes[2].datadir, 'regtest', 'wallets', 'wallet.dat'))
+        os.remove(os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat'))
+        os.remove(os.path.join(self.nodes[1].datadir, self.chain, 'wallets', 'wallet.dat'))
+        os.remove(os.path.join(self.nodes[2].datadir, self.chain, 'wallets', 'wallet.dat'))
 
     def run_test(self):
         self.log.info("Generating initial blockchain")
@@ -167,13 +167,13 @@ class WalletBackupTest(BitcoinTestFramework):
         self.erase_three()
 
         # Start node2 with no chain
-        shutil.rmtree(os.path.join(self.nodes[2].datadir, 'regtest', 'blocks'))
-        shutil.rmtree(os.path.join(self.nodes[2].datadir, 'regtest', 'chainstate'))
+        shutil.rmtree(os.path.join(self.nodes[2].datadir, self.chain, 'blocks'))
+        shutil.rmtree(os.path.join(self.nodes[2].datadir, self.chain, 'chainstate'))
 
         # Restore wallets from backup
-        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[0].datadir, 'regtest', 'wallets', 'wallet.dat'))
-        shutil.copyfile(os.path.join(self.nodes[1].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, 'regtest', 'wallets', 'wallet.dat'))
-        shutil.copyfile(os.path.join(self.nodes[2].datadir, 'wallet.bak'), os.path.join(self.nodes[2].datadir, 'regtest', 'wallets', 'wallet.dat'))
+        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat'))
+        shutil.copyfile(os.path.join(self.nodes[1].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, self.chain, 'wallets', 'wallet.dat'))
+        shutil.copyfile(os.path.join(self.nodes[2].datadir, 'wallet.bak'), os.path.join(self.nodes[2].datadir, self.chain, 'wallets', 'wallet.dat'))
 
         self.log.info("Re-starting nodes")
         self.start_three()
@@ -188,8 +188,8 @@ class WalletBackupTest(BitcoinTestFramework):
         self.erase_three()
 
         #start node2 with no chain
-        shutil.rmtree(os.path.join(self.nodes[2].datadir, 'regtest', 'blocks'))
-        shutil.rmtree(os.path.join(self.nodes[2].datadir, 'regtest', 'chainstate'))
+        shutil.rmtree(os.path.join(self.nodes[2].datadir, self.chain, 'blocks'))
+        shutil.rmtree(os.path.join(self.nodes[2].datadir, self.chain, 'chainstate'))
 
         self.start_three()
 
@@ -209,10 +209,10 @@ class WalletBackupTest(BitcoinTestFramework):
 
         # Backup to source wallet file must fail
         sourcePaths = [
-            os.path.join(self.nodes[0].datadir, 'regtest', 'wallets', 'wallet.dat'),
-            os.path.join(self.nodes[0].datadir, 'regtest', '.', 'wallets', 'wallet.dat'),
-            os.path.join(self.nodes[0].datadir, 'regtest', 'wallets', ''),
-            os.path.join(self.nodes[0].datadir, 'regtest', 'wallets')]
+            os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat'),
+            os.path.join(self.nodes[0].datadir, self.chain, '.', 'wallets', 'wallet.dat'),
+            os.path.join(self.nodes[0].datadir, self.chain, 'wallets', ''),
+            os.path.join(self.nodes[0].datadir, self.chain, 'wallets')]
 
         for sourcePath in sourcePaths:
             assert_raises_rpc_error(-4, "backup failed", self.nodes[0].backupwallet, sourcePath)
diff --git a/test/functional/wallet_hd.py b/test/functional/wallet_hd.py
index 575b501f5..7497475b6 100755
--- a/test/functional/wallet_hd.py
+++ b/test/functional/wallet_hd.py
@@ -68,11 +68,11 @@ class WalletHDTest(BitcoinTestFramework):
 
         self.log.info("Restore backup ...")
         self.stop_node(1)
-        # we need to delete the complete regtest directory
+        # we need to delete the complete chain directory
         # otherwise node1 would auto-recover all funds in flag the keypool keys as used
-        shutil.rmtree(os.path.join(self.nodes[1].datadir, "regtest", "blocks"))
-        shutil.rmtree(os.path.join(self.nodes[1].datadir, "regtest", "chainstate"))
-        shutil.copyfile(os.path.join(self.nodes[1].datadir, "hd.bak"), os.path.join(self.nodes[1].datadir, "regtest", "wallets", "wallet.dat"))
+        shutil.rmtree(os.path.join(self.nodes[1].datadir, self.chain, "blocks"))
+        shutil.rmtree(os.path.join(self.nodes[1].datadir, self.chain, "chainstate"))
+        shutil.copyfile(os.path.join(self.nodes[1].datadir, "hd.bak"), os.path.join(self.nodes[1].datadir, self.chain, "wallets", "wallet.dat"))
         self.start_node(1)
 
         # Assert that derivation is deterministic
@@ -93,9 +93,9 @@ class WalletHDTest(BitcoinTestFramework):
 
         # Try a RPC based rescan
         self.stop_node(1)
-        shutil.rmtree(os.path.join(self.nodes[1].datadir, "regtest", "blocks"))
-        shutil.rmtree(os.path.join(self.nodes[1].datadir, "regtest", "chainstate"))
-        shutil.copyfile(os.path.join(self.nodes[1].datadir, "hd.bak"), os.path.join(self.nodes[1].datadir, "regtest", "wallets", "wallet.dat"))
+        shutil.rmtree(os.path.join(self.nodes[1].datadir, self.chain, "blocks"))
+        shutil.rmtree(os.path.join(self.nodes[1].datadir, self.chain, "chainstate"))
+        shutil.copyfile(os.path.join(self.nodes[1].datadir, "hd.bak"), os.path.join(self.nodes[1].datadir, self.chain, "wallets", "wallet.dat"))
         self.start_node(1, extra_args=self.extra_args[1])
         connect_nodes(self.nodes[0], 1)
         self.sync_all()
diff --git a/test/functional/wallet_keypool_topup.py b/test/functional/wallet_keypool_topup.py
index 2e70a9e0a..829633a05 100755
--- a/test/functional/wallet_keypool_topup.py
+++ b/test/functional/wallet_keypool_topup.py
@@ -30,7 +30,7 @@ class KeypoolRestoreTest(BitcoinTestFramework):
         self.skip_if_no_wallet()
 
     def run_test(self):
-        wallet_path = os.path.join(self.nodes[1].datadir, "regtest", "wallets", "wallet.dat")
+        wallet_path = os.path.join(self.nodes[1].datadir, self.chain, "wallets", "wallet.dat")
         wallet_backup_path = os.path.join(self.nodes[1].datadir, "wallet.bak")
         self.nodes[0].generate(101)
 
diff --git a/test/functional/wallet_multiwallet.py b/test/functional/wallet_multiwallet.py
index 85d900f6c..f2fa41b64 100755
--- a/test/functional/wallet_multiwallet.py
+++ b/test/functional/wallet_multiwallet.py
@@ -38,7 +38,7 @@ class MultiWalletTest(BitcoinTestFramework):
     def run_test(self):
         node = self.nodes[0]
 
-        data_dir = lambda *p: os.path.join(node.datadir, 'regtest', *p)
+        data_dir = lambda *p: os.path.join(node.datadir, self.chain, *p)
         wallet_dir = lambda *p: data_dir('wallets', *p)
         wallet = lambda name: node.get_wallet_rpc(name)
 
@@ -186,7 +186,7 @@ class MultiWalletTest(BitcoinTestFramework):
         assert_equal(w4.getbalance(), 3)
 
         batch = w1.batch([w1.getblockchaininfo.get_request(), w1.getwalletinfo.get_request()])
-        assert_equal(batch[0]["result"]["chain"], "regtest")
+        assert_equal(batch[0]["result"]["chain"], self.chain)
         assert_equal(batch[1]["result"]["walletname"], "w1")
 
         self.log.info('Check for per-wallet settxfee call')
diff --git a/test/functional/wallet_reorgsrestore.py b/test/functional/wallet_reorgsrestore.py
index f48018e9f..497a5dd95 100755
--- a/test/functional/wallet_reorgsrestore.py
+++ b/test/functional/wallet_reorgsrestore.py
@@ -90,7 +90,7 @@ class ReorgsRestoreTest(BitcoinTestFramework):
         # Node0 wallet file is loaded on longest sync'ed node1
         self.stop_node(1)
         self.nodes[0].backupwallet(os.path.join(self.nodes[0].datadir, 'wallet.bak'))
-        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, 'regtest', 'wallet.dat'))
+        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, self.chain, 'wallet.dat'))
         self.start_node(1)
         tx_after_reorg = self.nodes[1].gettransaction(txid)
         # Check that normal confirmed tx is confirmed again but with different blockhash