diff --git a/clash-protocols/clash-protocols.cabal b/clash-protocols/clash-protocols.cabal
index 197732b4..00386f30 100644
--- a/clash-protocols/clash-protocols.cabal
+++ b/clash-protocols/clash-protocols.cabal
@@ -185,6 +185,7 @@ test-suite unittests
     Tests.Protocols.Avalon
     Tests.Protocols.Axi4
     Tests.Protocols.Plugin
+    Tests.Protocols.Vec
     Tests.Protocols.Wishbone
     Util
 
diff --git a/clash-protocols/tests/Tests/Protocols.hs b/clash-protocols/tests/Tests/Protocols.hs
index a09bc008..043732ec 100644
--- a/clash-protocols/tests/Tests/Protocols.hs
+++ b/clash-protocols/tests/Tests/Protocols.hs
@@ -5,6 +5,7 @@ import qualified Tests.Protocols.Avalon
 import qualified Tests.Protocols.Axi4
 import qualified Tests.Protocols.Df
 import qualified Tests.Protocols.DfConv
+import qualified Tests.Protocols.Vec
 import qualified Tests.Protocols.Wishbone
 
 tests :: TestTree
@@ -16,6 +17,7 @@ tests =
     , Tests.Protocols.Avalon.tests
     , Tests.Protocols.Axi4.tests
     , Tests.Protocols.Wishbone.tests
+    , Tests.Protocols.Vec.tests
     ]
 
 main :: IO ()
diff --git a/clash-protocols/tests/Tests/Protocols/Vec.hs b/clash-protocols/tests/Tests/Protocols/Vec.hs
new file mode 100644
index 00000000..936aef20
--- /dev/null
+++ b/clash-protocols/tests/Tests/Protocols/Vec.hs
@@ -0,0 +1,191 @@
+{-# LANGUAGE NumericUnderscores #-}
+
+module Tests.Protocols.Vec where
+
+-- base
+import Prelude
+
+-- clash-prelude
+import Clash.Prelude (System)
+import qualified Clash.Prelude as C
+
+-- hedgehog
+import Hedgehog
+
+-- tasty
+import Test.Tasty
+import Test.Tasty.Hedgehog (HedgehogTestLimit (HedgehogTestLimit))
+import Test.Tasty.Hedgehog.Extra (testProperty)
+import Test.Tasty.TH (testGroupGenerator)
+
+-- clash-protocols (me!)
+import Protocols
+import qualified Protocols.Vec as Vec
+
+import Clash.Hedgehog.Sized.Vector (genVec)
+import Protocols.Hedgehog
+
+-- tests
+import Tests.Protocols.Df (genData, genSmallInt, genVecData)
+
+prop_append :: Property
+prop_append =
+  idWithModel
+    @(C.Vec 2 (Df System Int), C.Vec 3 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen =
+    (,)
+      <$> genVecData genSmallInt
+      <*> genVecData genSmallInt
+  dut = Vec.append
+  model = uncurry (C.++)
+
+prop_append3 :: Property
+prop_append3 =
+  idWithModel
+    @(C.Vec 2 (Df System Int), C.Vec 3 (Df System Int), C.Vec 4 (Df System Int))
+    @(C.Vec 9 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen :: Gen (C.Vec 2 [Int], C.Vec 3 [Int], C.Vec 4 [Int])
+  gen =
+    (,,)
+      <$> genVecData genSmallInt
+      <*> genVecData genSmallInt
+      <*> genVecData genSmallInt
+  dut = Vec.append3
+  model (a, b, c) = (a C.++ b) C.++ c
+
+prop_split :: Property
+prop_split =
+  idWithModel
+    @(C.Vec 5 (Df System Int))
+    @(C.Vec 2 (Df System Int), C.Vec 3 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen = genVecData genSmallInt
+  dut = Vec.split
+  model = C.splitAtI
+
+prop_split3 :: Property
+prop_split3 =
+  idWithModel
+    @(C.Vec 9 (Df System Int))
+    @(C.Vec 2 (Df System Int), C.Vec 3 (Df System Int), C.Vec 4 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen = genVecData genSmallInt
+  dut = Vec.split3
+  model v = (v0, v1, v2)
+   where
+    (v0, C.splitAtI -> (v1, v2)) = C.splitAtI v
+
+prop_zip :: Property
+prop_zip =
+  idWithModel
+    @(C.Vec 2 (Df System Int), C.Vec 2 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen =
+    (,)
+      <$> genVecData genSmallInt
+      <*> genVecData genSmallInt
+  dut = Vec.zip
+  model (a, b) = C.zip a b
+
+prop_zip3 :: Property
+prop_zip3 =
+  idWithModel
+    @(C.Vec 2 (Df System Int), C.Vec 2 (Df System Int), C.Vec 2 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen =
+    (,,)
+      <$> genVecData genSmallInt
+      <*> genVecData genSmallInt
+      <*> genVecData genSmallInt
+  dut = Vec.zip3
+  model (a, b, c) = C.zip3 a b c
+
+prop_unzip :: Property
+prop_unzip =
+  idWithModel
+    @(C.Vec 2 (Df System Int, Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen = genVec ((,) <$> genData genSmallInt <*> genData genSmallInt)
+  dut = Vec.unzip
+  model = C.unzip
+
+prop_unzip3 :: Property
+prop_unzip3 =
+  idWithModel
+    @(C.Vec 2 (Df System Int, Df System Int, Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen = genVec ((,,) <$> genData genSmallInt <*> genData genSmallInt <*> genData genSmallInt)
+  dut = Vec.unzip3
+  model = C.unzip3
+
+prop_concat :: Property
+prop_concat =
+  idWithModel
+    @(C.Vec 2 (C.Vec 3 (Df System Int)))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen = genVec (genVecData genSmallInt)
+  dut = Vec.concat
+  model = C.concat
+
+prop_unconcat :: Property
+prop_unconcat =
+  idWithModel
+    @(C.Vec 6 (Df System Int))
+    defExpectOptions
+    gen
+    model
+    dut
+ where
+  gen = genVecData genSmallInt
+  dut = Vec.unconcat C.d2
+  model = C.unconcat C.d2
+
+tests :: TestTree
+tests =
+  -- TODO: Move timeout option to hedgehog for better error messages.
+  -- TODO: Does not seem to work for combinatorial loops like @let x = x in x@??
+  localOption (mkTimeout 20_000_000 {- 20 seconds -}) $
+    localOption
+      (HedgehogTestLimit (Just 1000))
+      $(testGroupGenerator)
+
+main :: IO ()
+main = defaultMain tests