diff --git a/pkgs/development/compilers/obliv-c/default.nix b/pkgs/development/compilers/obliv-c/default.nix
deleted file mode 100644
index 2f6777a0b556..000000000000
--- a/pkgs/development/compilers/obliv-c/default.nix
+++ /dev/null
@@ -1,63 +0,0 @@
-{
-  lib,
-  stdenv,
-  libgcrypt,
-  fetchFromGitHub,
-  ocamlPackages,
-  perl,
-}:
-stdenv.mkDerivation {
-  pname = "obliv-c";
-
-  version = "0.0pre20210621";
-
-  strictDeps = true;
-  nativeBuildInputs = [
-    perl
-  ]
-  ++ (with ocamlPackages; [
-    ocaml
-    findlib
-    ocamlbuild
-  ]);
-  buildInputs = [ ocamlPackages.num ];
-  propagatedBuildInputs = [ libgcrypt ];
-  src = fetchFromGitHub {
-    owner = "samee";
-    repo = "obliv-c";
-    rev = "e02e5c590523ef4dae06e167a7fa00037bb3fdaf";
-    sha256 = "sha256:02vyr4689f4dmwqqs0q1mrack9h3g8jz3pj8zqiz987dk0r5mz7a";
-  };
-
-  hardeningDisable = [ "fortify" ];
-
-  patches = [ ./ignore-complex-float128.patch ];
-
-  # https://github.com/samee/obliv-c/issues/76#issuecomment-438958209
-  env.OCAMLBUILD = "ocamlbuild -package num -ocamlopt 'ocamlopt -dontlink num' -ocamlc 'ocamlc -dontlink num'";
-
-  preBuild = ''
-    patchShebangs .
-  '';
-
-  preInstall = ''
-    mkdir -p "$out/bin"
-    cp bin/* "$out/bin"
-    mkdir -p "$out/share/doc/obliv-c"
-    cp -r doc/* README* CHANGE* Change* LICEN* TODO* "$out/share/doc/obliv-c"
-    mkdir -p "$out/share/obliv-c"
-    cp -r test "$out/share/obliv-c"
-    mkdir -p "$out/include"
-    cp src/ext/oblivc/*.h "$out/include"
-    mkdir -p "$out/lib"
-    gcc $(ar t _build/libobliv.a | sed -e 's@^@_build/@') --shared -o _build/libobliv.so
-    cp _build/lib*.a _build/lib*.so* "$out/lib"
-  '';
-
-  meta = {
-    description = "GCC wrapper that makes it easy to embed secure computation protocols inside regular C programs";
-    license = lib.licenses.bsd3;
-    maintainers = [ lib.maintainers.raskin ];
-    platforms = lib.platforms.linux;
-  };
-}
diff --git a/pkgs/development/compilers/obliv-c/ignore-complex-float128.patch b/pkgs/development/compilers/obliv-c/ignore-complex-float128.patch
deleted file mode 100644
index e3a5b74a9cb2..000000000000
--- a/pkgs/development/compilers/obliv-c/ignore-complex-float128.patch
+++ /dev/null
@@ -1,37 +0,0 @@
---- a/src/frontc/clexer.mll
-+++ b/src/frontc/clexer.mll
-@@ -134,9 +134,11 @@ let init_lexicon _ =
-       (* WW: see /usr/include/sys/cdefs.h for why __signed and __volatile
-        * are accepted GCC-isms *)
-       ("_Bool", fun loc -> BOOL loc);
-+      ("_Complex", fun loc -> COMPLEX loc);
-       ("char", fun loc -> CHAR loc);
-       ("int", fun loc -> INT loc);
-       ("float", fun loc -> FLOAT loc);
-+      ("__float128", fun loc -> FLOAT128 loc);
-       ("double", fun loc -> DOUBLE loc);
-       ("void", fun loc -> VOID loc);
-       ("enum", fun loc -> ENUM loc);
---- a/src/frontc/cparser.mly
-+++ b/src/frontc/cparser.mly
-@@ -269,6 +269,8 @@ let oblivState (s:statement): statement =
- %token<Cabs.cabsloc> VOLATILE EXTERN STATIC CONST RESTRICT AUTO REGISTER FROZEN
- %token<Cabs.cabsloc> THREAD
- 
-+%token<Cabs.cabsloc> COMPLEX FLOAT128
-+
- %token<Cabs.cabsloc> SIZEOF ALIGNOF
- 
- %token EQ PLUS_EQ MINUS_EQ STAR_EQ SLASH_EQ PERCENT_EQ
-@@ -1002,7 +1004,11 @@ type_spec:   /* ISO 6.7.2 */
- |   LONG            { Tlong, $1 }
- |   INT64           { Tint64, $1 }
- |   FLOAT           { Tfloat, $1 }
-+|   FLOAT128        { Tfloat, $1 }
- |   DOUBLE          { Tdouble, $1 }
-+|   COMPLEX FLOAT   { Tfloat, $2 }
-+|   COMPLEX FLOAT128{ Tfloat, $2 }
-+|   COMPLEX DOUBLE  { Tdouble, $2 }
- |   SIGNED          { Tsigned, $1 }
- |   UNSIGNED        { Tunsigned, $1 }
- |   STRUCT                 id_or_typename
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 9ec8c8620339..372b640f9912 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1672,6 +1672,7 @@ mapAliases {
   o = orbiton; # Added 2023-04-09
   oathToolkit = oath-toolkit; # Added 2022-04-04
   oauth2_proxy = throw "'oauth2_proxy' has been renamed to/replaced by 'oauth2-proxy'"; # Converted to throw 2024-10-17
+  obliv-c = throw "obliv-c has been removed from Nixpkgs, as it has been unmaintained upstream for 4 years and does not build with supported GCC versions"; # Added 2025-08-18
   ocis-bin = throw "ocis-bin has been renamed to ocis_5-bin'. Future major.minor versions will be made available as separate packages"; # Added 2025-03-30
   odoo15 = throw "odoo15 has been removed from nixpkgs as it is unsupported; migrate to a newer version of odoo"; # Added 2025-05-06
   offrss = throw "offrss has been removed due to lack of upstream maintenance; consider using another rss reader"; # Added 2025-06-01
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ee7493471bf9..6b7703b77e9f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5706,11 +5706,6 @@ with pkgs;
     enableGui = true;
   };
 
-  obliv-c = callPackage ../development/compilers/obliv-c {
-    stdenv = gcc10Stdenv;
-    ocamlPackages = ocaml-ng.ocamlPackages_4_14;
-  };
-
   ocaml-ng = callPackage ./ocaml-packages.nix { };
   ocaml = ocamlPackages.ocaml;