diff --git a/doc/release-notes/rl-2511.section.md b/doc/release-notes/rl-2511.section.md
index c700b68dbf6b..a3a411a52d2b 100644
--- a/doc/release-notes/rl-2511.section.md
+++ b/doc/release-notes/rl-2511.section.md
@@ -36,6 +36,9 @@
 
 - `stdenv.mkDerivation` and other derivation builders that use it no longer allow the value of `env` to be anything but an attribute set, for the purpose of setting environment variables that are available to the [builder](https://nix.dev/manual/nix/latest/store/derivation/#builder) process. An environment variable called `env` can still be provided by means of `mkDerivation { env.env = ...; }`, though we recommend to use a more specific name than "env".
 
+- The default Android NDK version has been raised to 27, and the default SDK version to 35.
+  NDK 21–26 have been removed, as they are end‐of‐life.
+
 - `conftest` since `0.60.0` has moved to use rego `v1` as default. To continue using `v0` use `--rego-version v0`. For more information about upgrading to Rego v1 syntax, see the [upstream docs](https://www.openpolicyagent.org/docs/latest/v0-upgrade/).
 
 - Zig 0.12 has been removed.
diff --git a/lib/systems/examples.nix b/lib/systems/examples.nix
index a3ac648dee18..9686ee8e59ab 100644
--- a/lib/systems/examples.nix
+++ b/lib/systems/examples.nix
@@ -72,8 +72,8 @@ rec {
   armv7a-android-prebuilt = {
     config = "armv7a-unknown-linux-androideabi";
     rust.rustcTarget = "armv7-linux-androideabi";
-    androidSdkVersion = "33";
-    androidNdkVersion = "26";
+    androidSdkVersion = "35";
+    androidNdkVersion = "27";
     useAndroidPrebuilt = true;
   }
   // platforms.armv7a-android;
@@ -81,15 +81,15 @@ rec {
   aarch64-android-prebuilt = {
     config = "aarch64-unknown-linux-android";
     rust.rustcTarget = "aarch64-linux-android";
-    androidSdkVersion = "33";
-    androidNdkVersion = "26";
+    androidSdkVersion = "35";
+    androidNdkVersion = "27";
     useAndroidPrebuilt = true;
   };
 
   aarch64-android = {
     config = "aarch64-unknown-linux-android";
-    androidSdkVersion = "33";
-    androidNdkVersion = "26";
+    androidSdkVersion = "35";
+    androidNdkVersion = "27";
     libc = "bionic";
     useAndroidPrebuilt = false;
     useLLVM = true;
diff --git a/pkgs/development/androidndk-pkgs/default.nix b/pkgs/development/androidndk-pkgs/default.nix
index 24771887f008..38e8d8798e49 100644
--- a/pkgs/development/androidndk-pkgs/default.nix
+++ b/pkgs/development/androidndk-pkgs/default.nix
@@ -4,7 +4,6 @@
   buildPackages,
   pkgs,
   targetPackages,
-  androidndkPkgs_23,
   config,
 }:
 
@@ -54,12 +53,6 @@ let
 in
 
 lib.recurseIntoAttrs {
-  "21" = makeNdkPkgs "21.0.6113669" pkgs.llvmPackages_14; # "9"
-  "23" = makeNdkPkgs "23.1.7779620" pkgs.llvmPackages_14; # "12"
-  # Versions below 24 use a version not available in nixpkgs/old version which could be removed in the near future so use 14 for them as this is only used to get the hardening flags.
-  "24" = makeNdkPkgs "24.0.8215888" pkgs.llvmPackages_14;
-  "25" = makeNdkPkgs "25.2.9519653" pkgs.llvmPackages_14;
-  "26" = makeNdkPkgs "26.3.11579264" pkgs.llvmPackages_17;
   "27" = makeNdkPkgs "27.0.12077973" pkgs.llvmPackages_18;
   "28" = makeNdkPkgs "28.0.13004108" pkgs.llvmPackages_19;
 }
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index e9ea0bee18e3..eb9c5f9ddad4 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -283,7 +283,12 @@ mapAliases {
   ansible_2_14 = throw "Ansible 2.14 goes end of life in 2024/05 and can't be supported throughout the 24.05 release cycle"; # Added 2024-04-11
   ansible_2_15 = throw "Ansible 2.15 goes end of life in 2024/11 and can't be supported throughout the 24.11 release cycle"; # Added 2024-11-08
   antennas = throw "antennas has been removed as it only works with tvheadend, which nobody was willing to maintain and was stuck on an unmaintained version that required FFmpeg 4; please see https://github.com/NixOS/nixpkgs/pull/332259 if you are interested in maintaining a newer version"; # Added 2024-08-21
-  androidndkPkgs_23b = lib.warnOnInstantiate "The package set `androidndkPkgs_23b` has been renamed to `androidndkPkgs_23`." androidndkPkgs_23; # Added 2024-07-21
+  androidndkPkgs_21 = throw "androidndkPkgs_21 has been removed, as it is EOL"; # Added 2025-08-09
+  androidndkPkgs_23 = throw "androidndkPkgs_23 has been removed, as it is EOL"; # Added 2025-08-09
+  androidndkPkgs_23b = throw "androidndkPkgs_23b has been removed, as it is EOL"; # Added 2025-08-09
+  androidndkPkgs_24 = throw "androidndkPkgs_24 has been removed, as it is EOL"; # Added 2025-08-09
+  androidndkPkgs_25 = throw "androidndkPkgs_25 has been removed, as it is EOL"; # Added 2025-08-09
+  androidndkPkgs_26 = throw "androidndkPkgs_26 has been removed, as it is EOL"; # Added 2025-08-09
   ankisyncd = throw "ankisyncd is dead, use anki-sync-server instead"; # Added 2024-08-10
   ao = libfive; # Added 2024-10-11
   anbox = throw "'anbox' has been removed as the upstream project is unmaintained, see https://github.com/anbox/.github/blob/main/profile/README.md"; # Added 2025-01-04
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a6930a03d7cc..3a6d9828143e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1770,12 +1770,7 @@ with pkgs;
 
   androidenv = callPackage ../development/mobile/androidenv { };
 
-  androidndkPkgs = androidndkPkgs_26;
-  androidndkPkgs_21 = (callPackage ../development/androidndk-pkgs { })."21";
-  androidndkPkgs_23 = (callPackage ../development/androidndk-pkgs { })."23";
-  androidndkPkgs_24 = (callPackage ../development/androidndk-pkgs { })."24";
-  androidndkPkgs_25 = (callPackage ../development/androidndk-pkgs { })."25";
-  androidndkPkgs_26 = (callPackage ../development/androidndk-pkgs { })."26";
+  androidndkPkgs = androidndkPkgs_27;
   androidndkPkgs_27 = (callPackage ../development/androidndk-pkgs { })."27";
   androidndkPkgs_28 = (callPackage ../development/androidndk-pkgs { })."28";