diff --git a/common/defs/webauthn/apps/microsoft.json b/common/defs/webauthn/apps/microsoft.json
new file mode 100644
index 000000000..aa65cfc5f
--- /dev/null
+++ b/common/defs/webauthn/apps/microsoft.json
@@ -0,0 +1,4 @@
+{
+  "label": "Microsoft",
+  "webauthn": "login.microsoft.com"
+}
diff --git a/common/defs/webauthn/apps/microsoft.png b/common/defs/webauthn/apps/microsoft.png
new file mode 100644
index 000000000..44e0e3a93
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diff --git a/core/src/apps/webauthn/knownapps.py b/core/src/apps/webauthn/knownapps.py
index 394566585..f2e8b59bc 100644
--- a/core/src/apps/webauthn/knownapps.py
+++ b/core/src/apps/webauthn/knownapps.py
@@ -27,6 +27,7 @@ _knownapps = {
     "www.binance.com": "Binance",
     "www.dropbox.com": "Dropbox",
     "secure.login.gov": "login.gov",
+    "login.microsoft.com": "Microsoft",
     "webauthn.bin.coffee": "webauthn.bin.coffee",
     "webauthn.io": "WebAuthn.io",
     "webauthn.me": "WebAuthn.me",
diff --git a/core/src/apps/webauthn/res/icon_microsoft.toif b/core/src/apps/webauthn/res/icon_microsoft.toif
new file mode 100644
index 000000000..8457156c9
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