diff --git a/Formula/wxmac@3.0.rb b/Formula/wxmac@3.0.rb
new file mode 100644
index 00000000000..1a0bc454be3
--- /dev/null
+++ b/Formula/wxmac@3.0.rb
@@ -0,0 +1,89 @@
+class WxmacAT30 < Formula
+  desc "Cross-platform C++ GUI toolkit (wxWidgets for macOS) - Stable Release"
+  homepage "https://www.wxwidgets.org"
+  url "https://github.com/wxWidgets/wxWidgets/releases/download/v3.0.5.1/wxWidgets-3.0.5.1.tar.bz2"
+  sha256 "440f6e73cf5afb2cbf9af10cec8da6cdd3d3998d527598a53db87099524ac807"
+  license "wxWindows"
+
+  livecheck do
+    url :stable
+    regex(/^v?(\d+\.\d*[02468](?:\.\d+)*)$/i)
+  end
+
+  depends_on "jpeg"
+  depends_on "libpng"
+  depends_on "libtiff"
+
+  on_linux do
+    depends_on "pkg-config" => :build
+    depends_on "gtk+"
+    depends_on "libsm"
+    depends_on "mesa-glu"
+  end
+
+  def install
+    args = [
+      "--prefix=#{prefix}",
+      "--enable-clipboard",
+      "--enable-controls",
+      "--enable-dataviewctrl",
+      "--enable-display",
+      "--enable-dnd",
+      "--enable-graphics_ctx",
+      "--enable-std_string",
+      "--enable-svg",
+      "--enable-unicode",
+      "--enable-webkit",
+      "--enable-webview",
+      "--with-expat",
+      "--with-libjpeg",
+      "--with-libpng",
+      "--with-libtiff",
+      "--with-opengl",
+      "--with-zlib",
+      "--disable-precomp-headers",
+      # This is the default option, but be explicit
+      "--disable-monolithic",
+    ]
+
+    on_macos do
+      # Set with-macosx-version-min to avoid configure defaulting to 10.5
+      args << "--with-macosx-version-min=#{MacOS.version}"
+      args << "--with-osx_cocoa"
+      args << "--with-libiconv"
+    end
+
+    system "./configure", *args
+    system "make", "install"
+
+    # wx-config should reference the public prefix, not wxmac's keg
+    # this ensures that Python software trying to locate wxpython headers
+    # using wx-config can find both wxmac and wxpython headers,
+    # which are linked to the same place
+    inreplace "#{bin}/wx-config", prefix, HOMEBREW_PREFIX
+
+    # Move some files out of the way to prevent conflict with `wxmac`
+    bin.install "#{bin}/wx-config" => "wx-config-#{version.major_minor}"
+    (bin/"wxrc").unlink
+    (share/"wx"/version.major_minor).install share/"aclocal", share/"bakefile"
+    Dir.glob(share/"locale/**/*.mo") { |file| add_suffix file, version.major_minor }
+  end
+
+  def add_suffix(file, suffix)
+    dir = File.dirname(file)
+    ext = File.extname(file)
+    base = File.basename(file, ext)
+    File.rename file, "#{dir}/#{base}-#{suffix}#{ext}"
+  end
+
+  def caveats
+    <<~EOS
+      To avoid conflicts with the wxmac formula, `wx-config` and `wxrc`
+      have been installed as `wx-config-#{version.major_minor}` and `wxrc-#{version.major_minor}`.
+    EOS
+  end
+
+  test do
+    system bin/"wx-config-#{version.major_minor}", "--libs"
+  end
+end
diff --git a/audit_exceptions/versioned_keg_only_allowlist.json b/audit_exceptions/versioned_keg_only_allowlist.json
index fb2982fbef6..5127144b0b0 100644
--- a/audit_exceptions/versioned_keg_only_allowlist.json
+++ b/audit_exceptions/versioned_keg_only_allowlist.json
@@ -22,5 +22,6 @@
   "pangomm@2.46",
   "pyqt@5",
   "python@3.9",
-  "python-tk@3.9"
+  "python-tk@3.9",
+  "wxmac@3.0"
 ]