diff --git a/CMakeLists.txt b/CMakeLists.txt
index 366ad6e584..48ba1b8602 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 include(utils)
 set_version(VERSION)
 
-project(ortools VERSION ${VERSION} LANGUAGES CXX)
+project(ortools VERSION ${VERSION} LANGUAGES CXX C)
 set(PROJECT_NAMESPACE ortools)
 message(STATUS "${PROJECT_NAME} version: ${PROJECT_VERSION}")
 #message(STATUS "major: ${PROJECT_VERSION_MAJOR}")
@@ -136,6 +136,14 @@ if(USE_SCIP)
   message(STATUS "Build SCIP: ${BUILD_SCIP}")
 endif()
 
+CMAKE_DEPENDENT_OPTION(USE_GLPK "Use the GLPK solver" ON "BUILD_CXX" OFF)
+message(STATUS "GLPK support: ${USE_GLPK}")
+if(USE_GLPK)
+  CMAKE_DEPENDENT_OPTION(BUILD_GLPK "Build the GLPK dependency Library" OFF
+    "NOT BUILD_DEPS" ON)
+  message(STATUS "Build GLPK: ${BUILD_GLPK}")
+endif()
+
 CMAKE_DEPENDENT_OPTION(USE_COINOR "Use the COIN-OR solver" ON "BUILD_CXX" OFF)
 message(STATUS "COIN-OR support: ${USE_COINOR}")
 if(USE_COINOR)
diff --git a/cmake/FindGLPK.cmake b/cmake/FindGLPK.cmake
new file mode 100644
index 0000000000..12b4ec160b
--- /dev/null
+++ b/cmake/FindGLPK.cmake
@@ -0,0 +1,85 @@
+#[=======================================================================[.rst:
+FindGLPK
+--------
+
+This module determines the GLPK library of the system.
+
+IMPORTED Targets
+^^^^^^^^^^^^^^^^
+
+This module defines :prop_tgt:`IMPORTED` target ``GLPK::GLPK``, if
+GLPK has been found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module defines the following variables:
+
+::
+
+GLPK_FOUND          - True if GLPK found.
+
+Hints
+^^^^^
+
+A user may set ``GLPK_ROOT`` to a GLPK installation root to tell this
+module where to look.
+#]=======================================================================]
+# first specifically look for the CMake version of GLPK
+find_package(GLPK QUIET NO_MODULE)
+# if we found the GLPK cmake package then we are done.
+if(GLPK_FOUND)
+  return()
+endif()
+
+set(GLPK_FOUND FALSE)
+if(CMAKE_C_COMPILER_LOADED)
+  include (CheckIncludeFile)
+  include (CheckCSourceCompiles)
+elseif(CMAKE_CXX_COMPILER_LOADED)
+  include (CheckIncludeFileCXX)
+  include (CheckCXXSourceCompiles)
+else()
+  message(FATAL_ERROR "FindGLPK only works if either C or CXX language is enabled")
+endif()
+
+if(NOT GLPK_ROOT)
+  if (DEFINED ENV{GLPK_ROOT})
+    set(GLPK_ROOT $ENV{GLPK_ROOT})
+  else()
+    find_path(GLPK_PATH libglpk.a libglpk.lib
+      DOC "Path in which libglpk is found"
+      PATHS
+      "/usr/local/lib"
+      "/usr/lib"
+      "${CMAKE_BINARY_DIR}/dependencies/GLPK/source/w32"
+      "${CMAKE_BINARY_DIR}/dependencies/GLPK/source/w64"
+      "${CMAKE_BINARY_DIR}/dependencies/GLPK/source/src/.lib"
+      )
+    if(GLPK_PATH)
+      set(GLPK_ROOT ${GLPK_PATH})
+    endif()
+  endif()
+endif()
+
+message(STATUS "GLPK_ROOT: ${GLPK_ROOT}")
+if(NOT GLPK_ROOT)
+  message(FATAL_ERROR "GLPK_ROOT: not found")
+else()
+  set(GLPK_FOUND TRUE)
+endif()
+
+if(GLPK_FOUND AND NOT TARGET GLPK::GLPK)
+  add_library(GLPK::GLPK UNKNOWN IMPORTED)
+  if (UNIX)
+    set_property(TARGET GLPK::GLPK PROPERTY IMPORTED_LOCATION
+      ${GLPK_ROOT}/libglpk.a
+      )
+  elseif(MSVC)
+    set_property(TARGET GLPK::GLPK PROPERTY IMPORTED_LOCATION
+      ${GLPK_ROOT}/libglpk.lib
+      )
+  else()
+    message(FATAL_ERROR "OR-Tools with GLPK not supported for ${CMAKE_SYSTEM}")
+  endif()
+endif()
diff --git a/cmake/README.md b/cmake/README.md
index aa946882f7..22c8b9b4b8 100644
--- a/cmake/README.md
+++ b/cmake/README.md
@@ -75,6 +75,9 @@ compile few of them using the options below (see [CMake Options](#cmake-options)
 * SCIP (`BUILD_SCIP`),<br>
   note: You can disable the support of SCIP solvers
   by using `-DUSE_SCIP=OFF` (`ON` by default).
+* GLPK (`BUILD_GLPK`),<br>
+  note: You can disable the support of GLPK solvers
+  by using `-DUSE_GLPK=OFF` (`ON` by default).
 
 * COIN-OR solvers,
   * COIN-OR CoinUtils (`BUILD_CoinUtils`),
@@ -152,6 +155,8 @@ cmake -S. -Bbuild -LH
 | `BUILD_Protobuf`  | OFF* | Static build the protobuf libraries<br>**Forced** to ON if `BUILD_DEPS=ON` |
 | `USE_SCIP`  | ON\* | Enable SCIP support<br>**Forced** to OFF if `BUILD_CXX=OFF` |
 | `BUILD_SCIP`  | OFF\* | Static build the SCIP libraries<br>**Forced** to ON if `USE_SCIP=ON` **and** `BUILD_DEPS=ON` |
+| `USE_GLPK`  | ON\* | Enable GLPK support<br>**Forced** to OFF if `BUILD_CXX=OFF` |
+| `BUILD_GLPK`  | OFF\* | Static build the GLPK libraries<br>**Forced** to ON if `USE_GLPK=ON` **and** `BUILD_DEPS=ON` |
 | `USE_COINOR`  | ON\* | Enable Coin-OR support<br>**Forced** to OFF if `BUILD_CXX=OFF` |
 | `BUILD_CoinUtils`  | OFF\* | Static build the CoinUtils library<br>**Forced** to ON if `USE_COINOR=ON` **and** `BUILD_DEPS=ON` |
 | `BUILD_Osi`  | OFF\* | Static build the Osi library<br>**Forced** to ON if `USE_COINOR=ON` **and** `BUILD_DEPS=ON` |
diff --git a/cmake/cpp.cmake b/cmake/cpp.cmake
index 4bf7bef960..fde0011493 100644
--- a/cmake/cpp.cmake
+++ b/cmake/cpp.cmake
@@ -23,6 +23,9 @@ if(USE_SCIP)
   list(APPEND OR_TOOLS_COMPILE_DEFINITIONS "USE_SCIP")
   set(GSCIP_DIR gscip)
 endif()
+if(USE_GLPK)
+  list(APPEND OR_TOOLS_COMPILE_DEFINITIONS "USE_GLPK")
+endif()
 if(USE_COINOR)
   list(APPEND OR_TOOLS_COMPILE_DEFINITIONS
     "USE_CBC" # enable COIN-OR CBC support
@@ -123,6 +126,7 @@ target_link_libraries(${PROJECT_NAME} PUBLIC
   protobuf::libprotobuf
   ${COINOR_DEPS}
   $<$<BOOL:${USE_SCIP}>:libscip>
+  $<$<BOOL:${USE_GLPK}>:GLPK::GLPK>
   $<$<BOOL:${USE_CPLEX}>:CPLEX::CPLEX>
   $<$<BOOL:${USE_XPRESS}>:XPRESS::XPRESS>
   Threads::Threads)
diff --git a/cmake/dependencies/CMakeLists.txt b/cmake/dependencies/CMakeLists.txt
index 7cf7e036a6..486c7dc961 100644
--- a/cmake/dependencies/CMakeLists.txt
+++ b/cmake/dependencies/CMakeLists.txt
@@ -102,6 +102,27 @@ if(BUILD_SCIP)
   message(CHECK_PASS "fetched")
 endif()
 
+# ##############################################################################
+# GLPK
+# ##############################################################################
+if(BUILD_GLPK)
+  message(CHECK_START "Fetching GLPK")
+  list(APPEND CMAKE_MESSAGE_INDENT "  ")
+  set(BUILD_EXAMPLES OFF)
+  set(WITH_GMP OFF)
+  set(WITH_ODBC OFF)
+  set(WITH_MYSQL OFF)
+
+  FetchContent_Declare(
+    glpk
+    GIT_REPOSITORY https://github.com/Mizux/GLPK.git
+    GIT_TAG        5.0
+  )
+  FetchContent_MakeAvailable(glpk)
+  list(POP_BACK CMAKE_MESSAGE_INDENT)
+  message(CHECK_PASS "fetched")
+endif()
+
 # ##############################################################################
 # Protobuf
 # ##############################################################################
diff --git a/cmake/deps.cmake b/cmake/deps.cmake
index bab76fbd1a..bf1eef5a68 100644
--- a/cmake/deps.cmake
+++ b/cmake/deps.cmake
@@ -54,6 +54,12 @@ if(USE_SCIP)
   endif()
 endif()
 
+if(USE_GLPK)
+  if(NOT BUILD_GLPK)
+    find_package(GLPK REQUIRED)
+  endif()
+endif()
+
 if(USE_COINOR)
   if(NOT BUILD_CoinUtils)
     find_package(CoinUtils REQUIRED)
diff --git a/cmake/dotnet.cmake b/cmake/dotnet.cmake
index 5c1084c50e..bb99cdb6d5 100644
--- a/cmake/dotnet.cmake
+++ b/cmake/dotnet.cmake
@@ -81,12 +81,15 @@ endif()
 # CMake will remove all '-D' prefix (i.e. -DUSE_FOO become USE_FOO)
 #get_target_property(FLAGS ${PROJECT_NAMESPACE}::ortools COMPILE_DEFINITIONS)
 set(FLAGS -DUSE_BOP -DUSE_GLOP -DABSL_MUST_USE_RESULT)
-if(USE_SCIP)
-  list(APPEND FLAGS "-DUSE_SCIP")
-endif()
 if(USE_COINOR)
   list(APPEND FLAGS "-DUSE_CBC" "-DUSE_CLP")
 endif()
+if(USE_GLPK)
+  list(APPEND FLAGS "-DUSE_GLPK")
+endif()
+if(USE_SCIP)
+  list(APPEND FLAGS "-DUSE_SCIP")
+endif()
 list(APPEND CMAKE_SWIG_FLAGS ${FLAGS} "-I${PROJECT_SOURCE_DIR}")
 
 # Needed by dotnet/CMakeLists.txt
diff --git a/cmake/java.cmake b/cmake/java.cmake
index dc76ddfe5a..136c692fd5 100644
--- a/cmake/java.cmake
+++ b/cmake/java.cmake
@@ -56,12 +56,15 @@ set(JAVA_PROJECT ortools-java)
 # CMake will remove all '-D' prefix (i.e. -DUSE_FOO become USE_FOO)
 #get_target_property(FLAGS ${PROJECT_NAMESPACE}::ortools COMPILE_DEFINITIONS)
 set(FLAGS -DUSE_BOP -DUSE_GLOP -DABSL_MUST_USE_RESULT)
-if(USE_SCIP)
-  list(APPEND FLAGS "-DUSE_SCIP")
-endif()
 if(USE_COINOR)
   list(APPEND FLAGS "-DUSE_CBC" "-DUSE_CLP")
 endif()
+if(USE_GLPK)
+  list(APPEND FLAGS "-DUSE_GLPK")
+endif()
+if(USE_SCIP)
+  list(APPEND FLAGS "-DUSE_SCIP")
+endif()
 list(APPEND CMAKE_SWIG_FLAGS ${FLAGS} "-I${PROJECT_SOURCE_DIR}")
 
 # Generate Protobuf java sources
diff --git a/cmake/ortoolsConfig.cmake.in b/cmake/ortoolsConfig.cmake.in
index 845571c341..b1aeb4ff59 100644
--- a/cmake/ortoolsConfig.cmake.in
+++ b/cmake/ortoolsConfig.cmake.in
@@ -17,16 +17,11 @@ endif()
 if(NOT absl_FOUND)
   find_dependency(absl REQUIRED ${CONFIG_FLAG})
 endif()
+
 if(NOT Protobuf_FOUND AND NOT PROTOBUF_FOUND AND NOT TARGET protobuf::libprotobuf)
   find_dependency(Protobuf REQUIRED ${CONFIG_FLAG})
 endif()
 
-if(@USE_SCIP@)
-  if(NOT scip_FOUND AND NOT TARGET libscip)
-    find_dependency(scip REQUIRED ${CONFIG_FLAG})
-  endif()
-endif()
-
 if(@USE_COINOR@)
   if(NOT Clp_FOUND AND NOT TARGET Coin::ClpSolver)
     find_dependency(Clp REQUIRED ${CONFIG_FLAG})
@@ -36,4 +31,16 @@ if(@USE_COINOR@)
   endif()
 endif()
 
+if(@USE_GLPK@)
+  if(NOT GLPK_FOUND AND NOT TARGET GLPK::GLPK)
+    find_dependency(GLPK REQUIRED ${CONFIG_FLAG})
+  endif()
+endif()
+
+if(@USE_SCIP@)
+  if(NOT scip_FOUND AND NOT TARGET libscip)
+    find_dependency(scip REQUIRED ${CONFIG_FLAG})
+  endif()
+endif()
+
 include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
diff --git a/cmake/python.cmake b/cmake/python.cmake
index 0580743abc..0c5475b565 100644
--- a/cmake/python.cmake
+++ b/cmake/python.cmake
@@ -149,12 +149,15 @@ add_custom_target(Py${PROJECT_NAME}_proto DEPENDS ${PROTO_PYS} ${PROJECT_NAMESPA
 # CMake will remove all '-D' prefix (i.e. -DUSE_FOO become USE_FOO)
 #get_target_property(FLAGS ${PROJECT_NAMESPACE}::ortools COMPILE_DEFINITIONS)
 set(FLAGS -DUSE_BOP -DUSE_GLOP -DABSL_MUST_USE_RESULT)
-if(USE_SCIP)
-  list(APPEND FLAGS "-DUSE_SCIP")
-endif()
 if(USE_COINOR)
   list(APPEND FLAGS "-DUSE_CBC" "-DUSE_CLP")
 endif()
+if(USE_GLPK)
+  list(APPEND FLAGS "-DUSE_GLPK")
+endif()
+if(USE_SCIP)
+  list(APPEND FLAGS "-DUSE_SCIP")
+endif()
 list(APPEND CMAKE_SWIG_FLAGS ${FLAGS} "-I${PROJECT_SOURCE_DIR}")
 
 set(PYTHON_PROJECT ${PROJECT_NAME})
diff --git a/ortools/linear_solver/CMakeLists.txt b/ortools/linear_solver/CMakeLists.txt
index f814b08c6a..13f7c0cf81 100644
--- a/ortools/linear_solver/CMakeLists.txt
+++ b/ortools/linear_solver/CMakeLists.txt
@@ -23,10 +23,11 @@ target_link_libraries(${NAME} PRIVATE
   absl::strings
   absl::str_format
   protobuf::libprotobuf
+  $<$<BOOL:${USE_SCIP}>:libscip>
+  $<$<BOOL:${USE_GLPK}>:GLPK::GLPK>
   $<$<BOOL:${USE_COINOR}>:Coin::Cbc>
   $<$<BOOL:${USE_COINOR}>:Coin::Clp>
   $<$<BOOL:${USE_CPLEX}>:CPLEX::CPLEX>
   $<$<BOOL:${USE_XPRESS}>:XPRESS::XPRESS>
-  $<$<BOOL:${USE_SCIP}>:libscip>
   ${PROJECT_NAME}::proto)
 #add_library(${PROJECT_NAME}::linear_solver ALIAS ${NAME})