diff --git a/packages/connect-explorer/src/data/menu.ts b/packages/connect-explorer/src/data/menu.ts
index 3ddbb8ae0373..a83d88101c0d 100644
--- a/packages/connect-explorer/src/data/menu.ts
+++ b/packages/connect-explorer/src/data/menu.ts
@@ -329,6 +329,19 @@ export default [
                 name: 'Sign transaction',
                 url: '/method/cardanoSignTransaction',
             },
+            {
+                name: 'Sign message',
+                children: [
+                    {
+                        name: 'include key hash',
+                        url: '/method/cardanoSignMessage',
+                    },
+                    {
+                        name: 'include address',
+                        url: '/method/cardanoSignMessage-addressParameters',
+                    },
+                ],
+            },
             {
                 name: 'Account info',
                 children: [
diff --git a/packages/connect-explorer/src/data/methods/cardano/index.ts b/packages/connect-explorer/src/data/methods/cardano/index.ts
index e2219ee9bc40..03d21bab18a5 100644
--- a/packages/connect-explorer/src/data/methods/cardano/index.ts
+++ b/packages/connect-explorer/src/data/methods/cardano/index.ts
@@ -1,6 +1,7 @@
 import getPublicKey from './getPublicKey';
 import getAddress from './getAddress';
 import signTransaction from './signTransaction';
+import signMessage from './signMessage';
 import getAccountInfo from './getAccountInfo';
 import getNativeScriptHash from './getNativeScriptHash';
 
@@ -8,6 +9,7 @@ export default [
     ...getPublicKey,
     ...getAddress,
     ...signTransaction,
+    ...signMessage,
     ...getAccountInfo,
     ...getNativeScriptHash,
 ];
diff --git a/packages/connect-explorer/src/data/methods/cardano/signMessage.ts b/packages/connect-explorer/src/data/methods/cardano/signMessage.ts
new file mode 100644
index 000000000000..0d46759bdd71
--- /dev/null
+++ b/packages/connect-explorer/src/data/methods/cardano/signMessage.ts
@@ -0,0 +1,75 @@
+import { CardanoAddressType } from '@trezor/protobuf/lib/messages-schema';
+import { cardanoDerivationType } from './common';
+
+const name = 'cardanoSignMessage';
+const docs = 'methods/cardanoSignMessage.md';
+
+const batch = [
+    {
+        name: 'signingPath',
+        label: 'Bip44 path',
+        type: 'input',
+        value: "m/1852'/1815'/0'/0/0",
+    },
+    {
+        name: 'payload',
+        label: 'Payload hex string',
+        type: 'textarea',
+        value: '48656c6c6f205472657a6f7221',
+    },
+    {
+        name: 'hashPayload',
+        label: 'Hash payload',
+        type: 'checkbox',
+        value: true,
+    },
+    {
+        name: 'displayAscii',
+        label: 'Display payload as ASCII on Trezor',
+        type: 'checkbox',
+        value: false,
+    },
+    cardanoDerivationType,
+];
+
+export default [
+    {
+        url: '/method/cardanoSignMessage',
+        name,
+        docs,
+        submitButton: 'Sign message',
+
+        fields: batch,
+    },
+    {
+        url: '/method/cardanoSignMessage-addressParameters',
+        name,
+        docs,
+        submitButton: 'Sign message including address',
+
+        fields: [
+            ...batch,
+            {
+                name: 'protocolMagic',
+                label: 'Protocol magic',
+                type: 'number',
+                value: 764824073,
+            },
+            {
+                name: 'networkId',
+                label: 'Network id',
+                type: 'number',
+                value: 1,
+            },
+            {
+                name: 'addressParameters',
+                type: 'json',
+                value: {
+                    path: "m/1852'/1815'/0'/0/0",
+                    stakingPath: "m/1852'/1815'/0'/2/0",
+                    addressType: CardanoAddressType.BASE,
+                },
+            },
+        ],
+    },
+];