diff --git a/docs/api/structures/web-preferences.md b/docs/api/structures/web-preferences.md
index 4325bcb29c95..047a13cefc2a 100644
--- a/docs/api/structures/web-preferences.md
+++ b/docs/api/structures/web-preferences.md
@@ -67,6 +67,7 @@
   * `monospace` string (optional) - Defaults to `Courier New`.
   * `cursive` string (optional) - Defaults to `Script`.
   * `fantasy` string (optional) - Defaults to `Impact`.
+  * `math` string (optional) - Defaults to `Latin Modern Math`.
 * `defaultFontSize` Integer (optional) - Defaults to `16`.
 * `defaultMonospaceFontSize` Integer (optional) - Defaults to `13`.
 * `minimumFontSize` Integer (optional) - Defaults to `0`.
diff --git a/shell/browser/web_contents_preferences.cc b/shell/browser/web_contents_preferences.cc
index 1527c45be457..035ecad6439d 100644
--- a/shell/browser/web_contents_preferences.cc
+++ b/shell/browser/web_contents_preferences.cc
@@ -450,6 +450,10 @@ void WebContentsPreferences::OverrideWebkitPrefs(
         iter != default_font_family_.end())
       prefs->fantasy_font_family_map[blink::web_pref::kCommonScript] =
           iter->second;
+    if (auto iter = default_font_family_.find("math");
+        iter != default_font_family_.end())
+      prefs->math_font_family_map[blink::web_pref::kCommonScript] =
+          iter->second;
   }
 
   if (default_font_size_)