diff --git a/pkgs/development/libraries/s2n/default.nix b/pkgs/development/libraries/s2n/default.nix
new file mode 100644
index 000000000000..3ec66ebf52d1
--- /dev/null
+++ b/pkgs/development/libraries/s2n/default.nix
@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, cmake, openssl }:
+
+stdenv.mkDerivation rec {
+  pname = "s2n";
+  version = "0.10.23";
+
+  src = fetchFromGitHub {
+    owner = "awslabs";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "063wqpszhfcbxm7a7s6d6kinqd6b6dxij85lk9jjkrslg5fgqbki";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  propagatedBuildInputs = [ openssl ]; # s2n-config has find_dependency(LibCrypto).
+
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=ON"
+  ];
+
+  meta = with lib; {
+    description = "C99 implementation of the TLS/SSL protocols";
+    homepage = "https://github.com/awslabs/s2n";
+    license = licenses.asl20;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ orivej ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d7cacc4b682b..1d0e35fba6d2 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16150,6 +16150,8 @@ in
 
   graphite2 = callPackage ../development/libraries/silgraphite/graphite2.nix {};
 
+  s2n = callPackage ../development/libraries/s2n { };
+
   simavr = callPackage ../development/tools/simavr {
     avrgcc = pkgsCross.avr.buildPackages.gcc;
     avrlibc = pkgsCross.avr.libcCross;