diff --git a/pkgs/os-specific/linux/kernel/linux-4.3.nix b/pkgs/os-specific/linux/kernel/linux-4.3.nix
deleted file mode 100644
index 0bdc2d08d8a4..000000000000
--- a/pkgs/os-specific/linux/kernel/linux-4.3.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{ stdenv, fetchurl, perl, buildLinux, ... } @ args:
-
-import ./generic.nix (args // rec {
-  version = "4.3.6";
-
-  extraMeta.branch = "4.3";
-
-  src = fetchurl {
-    url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz";
-    sha256 = "0wdd8z4ykjz1rkizlv9dm70vjd87fly4km4bs7av4p5w5xfp98z0";
-  };
-
-  features.iwlwifi = true;
-  features.efiBootStub = true;
-  features.needsCifsUtils = true;
-  features.canDisableNetfilterConntrackHelpers = true;
-  features.netfilterRPFilter = true;
-} // (args.argsOverride or {}))
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index df8d3abc7a74..c1f5ad75e886 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10825,15 +10825,6 @@ in
       ];
   };
 
-  linux_4_3 = callPackage ../os-specific/linux/kernel/linux-4.3.nix {
-    kernelPatches = [ kernelPatches.bridge_stp_helper ]
-      ++ lib.optionals ((platform.kernelArch or null) == "mips")
-      [ kernelPatches.mips_fpureg_emu
-        kernelPatches.mips_fpu_sigill
-        kernelPatches.mips_ext3_n32
-      ];
-  };
-
   linux_4_4 = callPackage ../os-specific/linux/kernel/linux-4.4.nix {
     kernelPatches = [ kernelPatches.bridge_stp_helper kernelPatches.qat_common_Makefile ]
       ++ lib.optionals ((platform.kernelArch or null) == "mips")
@@ -11023,7 +11014,6 @@ in
   linuxPackages_3_14 = recurseIntoAttrs (self.linuxPackagesFor self.linux_3_14 linuxPackages_3_14);
   linuxPackages_3_18 = recurseIntoAttrs (self.linuxPackagesFor self.linux_3_18 linuxPackages_3_18);
   linuxPackages_4_1 = recurseIntoAttrs (self.linuxPackagesFor self.linux_4_1 linuxPackages_4_1);
-  linuxPackages_4_3 = recurseIntoAttrs (self.linuxPackagesFor self.linux_4_3 linuxPackages_4_3);
   linuxPackages_4_4 = recurseIntoAttrs (self.linuxPackagesFor self.linux_4_4 linuxPackages_4_4);
   linuxPackages_4_5 = recurseIntoAttrs (self.linuxPackagesFor self.linux_4_5 linuxPackages_4_5);
   linuxPackages_4_6 = recurseIntoAttrs (self.linuxPackagesFor self.linux_4_6 linuxPackages_4_6);