diff --git a/Aliases/tbb@2021 b/Aliases/tbb@2021
new file mode 120000
index 00000000000..f175acd5263
--- /dev/null
+++ b/Aliases/tbb@2021
@@ -0,0 +1 @@
+../Formula/tbb.rb
\ No newline at end of file
diff --git a/Formula/tbb@2020.rb b/Formula/tbb@2020.rb
new file mode 100644
index 00000000000..c544781bf6b
--- /dev/null
+++ b/Formula/tbb@2020.rb
@@ -0,0 +1,63 @@
+class TbbAT2020 < Formula
+  desc "Rich and complete approach to parallelism in C++"
+  homepage "https://github.com/oneapi-src/oneTBB"
+  url "https://github.com/intel/tbb/archive/v2020.3.tar.gz"
+  version "2020_U3"
+  sha256 "ebc4f6aa47972daed1f7bf71d100ae5bf6931c2e3144cf299c8cc7d041dca2f3"
+  license "Apache-2.0"
+
+  keg_only :versioned_formula
+
+  deprecate! date: "2020-04-02", because: :unsupported
+
+  depends_on "cmake" => :build
+  depends_on "swig" => :build
+  depends_on "python@3.9"
+
+  # Remove when upstream fix is released
+  # https://github.com/oneapi-src/oneTBB/pull/258
+  patch do
+    url "https://github.com/oneapi-src/oneTBB/commit/86f6dcdc17a8f5ef2382faaef860cfa5243984fe.patch?full_index=1"
+    sha256 "d62cb666de4010998c339cde6f41c7623a07e9fc69e498f2e149821c0c2c6dd0"
+  end
+
+  def install
+    compiler = (ENV.compiler == :clang) ? "clang" : "gcc"
+    system "make", "tbb_build_prefix=BUILDPREFIX", "compiler=#{compiler}"
+    lib.install Dir["build/BUILDPREFIX_release/*.dylib"]
+
+    # Build and install static libraries
+    system "make", "tbb_build_prefix=BUILDPREFIX", "compiler=#{compiler}",
+                   "extra_inc=big_iron.inc"
+    lib.install Dir["build/BUILDPREFIX_release/*.a"]
+    include.install "include/tbb"
+
+    cd "python" do
+      ENV["TBBROOT"] = prefix
+      system Formula["python@3.9"].opt_bin/"python3", *Language::Python.setup_install_args(prefix)
+    end
+
+    system "cmake", *std_cmake_args,
+                    "-DINSTALL_DIR=lib/cmake/TBB",
+                    "-DSYSTEM_NAME=Darwin",
+                    "-DTBB_VERSION_FILE=#{include}/tbb/tbb_stddef.h",
+                    "-P", "cmake/tbb_config_installer.cmake"
+
+    (lib/"cmake"/"TBB").install Dir["lib/cmake/TBB/*.cmake"]
+  end
+
+  test do
+    (testpath/"test.cpp").write <<~EOS
+      #include <tbb/task_scheduler_init.h>
+      #include <iostream>
+
+      int main()
+      {
+        std::cout << tbb::task_scheduler_init::default_num_threads();
+        return 0;
+      }
+    EOS
+    system ENV.cxx, "test.cpp", "-L#{lib}", "-I#{include}", "-ltbb", "-o", "test"
+    system "./test"
+  end
+end