diff --git a/patterns.go b/patterns.go
index 4fd6f6a..98eba14 100644
--- a/patterns.go
+++ b/patterns.go
@@ -74,6 +74,15 @@ var WebRTCDirect = Or(
 	And(HTTP, Base(ma.P_P2P_WEBRTC_DIRECT)),
 	And(HTTPS, Base(ma.P_P2P_WEBRTC_DIRECT)))
 
+// Define a onion v2 format multiaddr
+var ONION2 = Base(ma.P_ONION)
+
+// Define a onion v3 format multiaddr
+var ONION3 = Base(ma.P_ONION3)
+
+// Define both onion v2 and v3 multiaddr
+var ONION = Or(ONION2, ONION3)
+    
 const (
 	or  = iota
 	and = iota
diff --git a/patterns_test.go b/patterns_test.go
index b14e24b..2d01945 100644
--- a/patterns_test.go
+++ b/patterns_test.go
@@ -75,6 +75,16 @@ var TestVectors = map[string]*testVector{
 		Good:    []string{"/ip4/1.2.3.4/https", "/dns4/example.io/https", "/dns6/::/tcp/7011/https", "/ip6/fc00::/https"},
 		Bad:     []string{"/ip4/1.2.3.4/http", "/ip4/0.0.0.0/tcp/12345/quic", "/ip6/fc00::/tcp/5523"},
 	},
+	"ONION": {
+		Pattern: ONION,
+		Good: []string{"/onion/timaq4ygg2iegci7:1234", "/onion3/vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd:1234"},
+		Bad:  []string{"/onion/timaq4ygg2iegci:80", "/onion/timaq4ygg2iegci7:-1", "/onion/timaq4ygg2iegci7", 
+			"/onion3/vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopyyd:1234", 
+			"/onion3/vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd:-1", 
+			"/onion3/vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd"},
+	},
+
+
 }
 
 func TestProtocolMatching(t *testing.T) {