diff --git a/_data/simple-icons.json b/_data/simple-icons.json
index 3270f7e6..e51c8614 100644
--- a/_data/simple-icons.json
+++ b/_data/simple-icons.json
@@ -1121,6 +1121,11 @@
             "hex": "E1A925",
             "source": "http://www.fnac.com/"
         },
+        {
+            "title": "Formstack",
+            "hex": "21B573",
+            "source": "https://www.formstack.com/brand/guidelines"
+        },
         {
             "title": "Foursquare",
             "hex": "F94877",
diff --git a/icons/formstack.svg b/icons/formstack.svg
new file mode 100644
index 00000000..050e8feb
--- /dev/null
+++ b/icons/formstack.svg
@@ -0,0 +1 @@
+<svg role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><title>Formstack icon</title><path d="M19 4h1.4a.6.6 0 01.6.6v14.76a.6.6 0 01-.6.6H19zm3 2h1.4a.6.6 0 01.6.6v10.77a.6.6 0 01-.6.6H22zM.6 2h16.8a.6.6 0 01.6.6v18.76a.6.6 0 01-.6.6H.6a.6.6 0 01-.6-.6V2.64A.6.6 0 01.6 2zm3.6 3.23a.2.2 0 00-.2.2v7.35a.21.21 0 000 .12.21.21 0 00.28 0l9.23-7.35a.21.21 0 00.08-.16.2.2 0 00-.2-.2zm-.2 12a.23.23 0 000 .11.21.21 0 00.28.05l7.58-5.18A.22.22 0 0012 12a.2.2 0 00-.2-.2H6.89a.21.21 0 00-.12 0L4.08 14a.18.18 0 00-.08.1zm.09 1.15a.2.2 0 00-.09.17v.08a.2.2 0 00.19.2H7a.2.2 0 00.2-.2v-2a.15.15 0 000-.11.19.19 0 00-.27-.05z"/></svg>
\ No newline at end of file