diff --git a/cardano-cli/cardano-cli.cabal b/cardano-cli/cardano-cli.cabal
index 1383ec545d..bb86a64ff2 100644
--- a/cardano-cli/cardano-cli.cabal
+++ b/cardano-cli/cardano-cli.cabal
@@ -364,6 +364,7 @@ test-suite cardano-cli-golden
                         Test.Golden.Byron.UpdateProposal
                         Test.Golden.Byron.Vote
                         Test.Golden.Byron.Witness
+                        Test.Golden.Conway.Transaction.Assemble
                         Test.Golden.EraBased.Governance.AnswerPoll
                         Test.Golden.EraBased.Governance.CreatePoll
                         Test.Golden.EraBased.Governance.VerifyPoll
diff --git a/cardano-cli/src/Cardano/CLI/Read.hs b/cardano-cli/src/Cardano/CLI/Read.hs
index 876893be31..74e01afa31 100644
--- a/cardano-cli/src/Cardano/CLI/Read.hs
+++ b/cardano-cli/src/Cardano/CLI/Read.hs
@@ -603,6 +603,7 @@ readCddlWitness fp = do
             , FromCDDLWitness "TxWitness MaryEra" CddlWitness
             , FromCDDLWitness "TxWitness AlonzoEra" CddlWitness
             , FromCDDLWitness "TxWitness BabbageEra" CddlWitness
+            , FromCDDLWitness "TxWitness ConwayEra" CddlWitness
             ]
 
 -- Witness handling
@@ -860,6 +861,7 @@ readFileInAnyCardanoEra
      , HasTextEnvelope (thing MaryEra)
      , HasTextEnvelope (thing AlonzoEra)
      , HasTextEnvelope (thing BabbageEra)
+     , HasTextEnvelope (thing ConwayEra)
      )
   => (forall era. AsType era -> AsType (thing era))
   -> FileOrPipe
@@ -872,6 +874,7 @@ readFileInAnyCardanoEra asThing =
    , FromSomeType (asThing AsMaryEra)    (InAnyCardanoEra MaryEra)
    , FromSomeType (asThing AsAlonzoEra)  (InAnyCardanoEra AlonzoEra)
    , FromSomeType (asThing AsBabbageEra) (InAnyCardanoEra BabbageEra)
+   , FromSomeType (asThing AsConwayEra)  (InAnyCardanoEra ConwayEra)
    ]
 
 -- | We need a type for handling files that may be actually be things like
diff --git a/cardano-cli/test/cardano-cli-golden/Test/Golden/Conway/Transaction/Assemble.hs b/cardano-cli/test/cardano-cli-golden/Test/Golden/Conway/Transaction/Assemble.hs
new file mode 100644
index 0000000000..d2a8c0eced
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-golden/Test/Golden/Conway/Transaction/Assemble.hs
@@ -0,0 +1,30 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Test.Golden.Conway.Transaction.Assemble where
+
+import           Control.Monad (void)
+
+import           Test.Cardano.CLI.Util
+
+import           Hedgehog (Property)
+import qualified Hedgehog.Extras.Test.Base as H
+import qualified Hedgehog.Extras.Test.File as H
+
+{- HLINT ignore "Use camelCase" -}
+
+-- Check that we can assemble a txbody and a tx witness to form a transaction
+
+hprop_golden_conwayTransactionAssembleWitness_SigningKey :: Property
+hprop_golden_conwayTransactionAssembleWitness_SigningKey = propertyOnce $ H.moduleWorkspace "tmp" $ \tempDir -> do
+  witnessTx <- noteTempFile tempDir "single-signing-key-witness-tx"
+  txBodyFile <- noteInputFile "test/cardano-cli-golden/files/input/conway/txbody"
+  signingKeyWitnessFile <- noteInputFile "test/cardano-cli-golden/files/input/conway/singleSigningKeyWitness"
+  void $ execCardanoCLI
+    [ "conway", "transaction", "assemble"
+    , "--tx-body-file", txBodyFile
+    , "--witness-file", signingKeyWitnessFile
+    , "--witness-file", signingKeyWitnessFile
+    , "--out-file", witnessTx
+    ]
+
+  H.assertFileOccurences 1 "Witnessed Tx ConwayEra" witnessTx
diff --git a/cardano-cli/test/cardano-cli-golden/files/input/conway/singleSigningKeyWitness b/cardano-cli/test/cardano-cli-golden/files/input/conway/singleSigningKeyWitness
new file mode 100644
index 0000000000..2a09eeed44
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-golden/files/input/conway/singleSigningKeyWitness
@@ -0,0 +1,5 @@
+{
+  "type": "TxWitness ConwayEra",
+  "description": "Key Witness ShelleyEra",
+  "cborHex": "825820c16f6bf723e38013f88588539fbbf1cd6b57bbbd8bb2cf318e641f00dcd527875840e62f3050bf7ee1d1547badd6f8346c00957b20c8d8f201fc8cf9d64485b3b3c944392afe00619516a00d98c6ccfa44a7de8c1a093efdc10832bb6fdf4cde8e08"
+}
diff --git a/cardano-cli/test/cardano-cli-golden/files/input/conway/txbody b/cardano-cli/test/cardano-cli-golden/files/input/conway/txbody
new file mode 100644
index 0000000000..b50f9b7f07
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-golden/files/input/conway/txbody
@@ -0,0 +1,5 @@
+{
+  "type": "Unwitnessed Tx ConwayEra",
+  "description": "Ledger Cddl Format",
+  "cborHex": "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"
+}