diff --git a/src/styles/fontFamily/index.native.js b/src/styles/fontFamily/index.native.ts
similarity index 86%
rename from src/styles/fontFamily/index.native.js
rename to src/styles/fontFamily/index.native.ts
index 369d1f66f8f1..0d6c253eb3a6 100644
--- a/src/styles/fontFamily/index.native.js
+++ b/src/styles/fontFamily/index.native.ts
@@ -1,6 +1,7 @@
 import bold from './bold';
+import FontFamilyStyles from './types';
 
-const fontFamily = {
+const fontFamily: FontFamilyStyles = {
     EXP_NEUE_ITALIC: 'ExpensifyNeue-Italic',
     EXP_NEUE_BOLD: bold,
     EXP_NEUE: 'ExpensifyNeue-Regular',
diff --git a/src/styles/fontFamily/index.js b/src/styles/fontFamily/index.ts
similarity index 91%
rename from src/styles/fontFamily/index.js
rename to src/styles/fontFamily/index.ts
index 899ef20772de..57d08ce28771 100644
--- a/src/styles/fontFamily/index.js
+++ b/src/styles/fontFamily/index.ts
@@ -1,8 +1,9 @@
 import bold from './bold';
+import FontFamilyStyles from './types';
 
 // In windows and ubuntu, we need some extra system fonts for emojis to work properly
 // otherwise few of them will appear as black and white
-const fontFamily = {
+const fontFamily: FontFamilyStyles = {
     EXP_NEUE_ITALIC: 'ExpensifyNeue-Italic, Segoe UI Emoji, Noto Color Emoji',
     EXP_NEUE_BOLD: bold,
     EXP_NEUE: 'ExpensifyNeue-Regular, Segoe UI Emoji, Noto Color Emoji',
diff --git a/src/styles/fontFamily/types.ts b/src/styles/fontFamily/types.ts
new file mode 100644
index 000000000000..4c9a121e80d7
--- /dev/null
+++ b/src/styles/fontFamily/types.ts
@@ -0,0 +1,15 @@
+type FontFamilyKeys =
+    | 'EXP_NEUE_ITALIC'
+    | 'EXP_NEUE_BOLD'
+    | 'EXP_NEUE'
+    | 'EXP_NEW_KANSAS_MEDIUM'
+    | 'EXP_NEW_KANSAS_MEDIUM_ITALIC'
+    | 'SYSTEM'
+    | 'MONOSPACE'
+    | 'MONOSPACE_ITALIC'
+    | 'MONOSPACE_BOLD'
+    | 'MONOSPACE_BOLD_ITALIC';
+
+type FontFamilyStyles = Record<FontFamilyKeys, string>;
+
+export default FontFamilyStyles;