diff --git a/python/Makefile b/python/Makefile
index 14a556cd8..2792fc9dc 100644
--- a/python/Makefile
+++ b/python/Makefile
@@ -148,6 +148,8 @@ port_src += $(addprefix python/port/,\
   mod/matplotlib/pyplot/plot_view.cpp \
   mod/time/modtime.c \
   mod/time/modtime_table.c \
+  mod/os/modos.c \
+  mod/os/modos_table.c \
   mod/turtle/modturtle.cpp \
   mod/turtle/modturtle_table.c \
   mod/turtle/turtle.cpp \
diff --git a/python/port/genhdr/qstrdefs.in.h b/python/port/genhdr/qstrdefs.in.h
index 4dbcf5453..1c438a66c 100644
--- a/python/port/genhdr/qstrdefs.in.h
+++ b/python/port/genhdr/qstrdefs.in.h
@@ -526,3 +526,5 @@ Q(SEEK_SET)
 Q(SEEK_CUR)
 Q(SEEK_END)
 
+Q(os)
+
diff --git a/python/port/mod/os/modos.cpp b/python/port/mod/os/modos.cpp
new file mode 100644
index 000000000..9ef8d03d1
--- /dev/null
+++ b/python/port/mod/os/modos.cpp
@@ -0,0 +1,3 @@
+extern "C" {
+#include "modos.h"
+}
diff --git a/python/port/mod/os/modos.h b/python/port/mod/os/modos.h
new file mode 100644
index 000000000..023ac9eaa
--- /dev/null
+++ b/python/port/mod/os/modos.h
@@ -0,0 +1 @@
+#include <py/obj.h>
diff --git a/python/port/mod/os/modos_table.c b/python/port/mod/os/modos_table.c
new file mode 100644
index 000000000..1bbe09b4f
--- /dev/null
+++ b/python/port/mod/os/modos_table.c
@@ -0,0 +1,12 @@
+#include "modos.h"
+
+STATIC const mp_rom_map_elem_t modos_module_globals_table[] = {
+  { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_os) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(modos_module_globals, modos_module_globals_table);
+
+const mp_obj_module_t modos_module = {
+  .base = { &mp_type_module },
+  .globals = (mp_obj_dict_t*)&modos_module_globals,
+};
diff --git a/python/port/mpconfigport.h b/python/port/mpconfigport.h
index 53c3bb90a..20024c5b7 100644
--- a/python/port/mpconfigport.h
+++ b/python/port/mpconfigport.h
@@ -131,6 +131,7 @@ extern const struct _mp_obj_module_t modkandinsky_module;
 extern const struct _mp_obj_module_t modmatplotlib_module;
 extern const struct _mp_obj_module_t modpyplot_module;
 extern const struct _mp_obj_module_t modtime_module;
+extern const struct _mp_obj_module_t modos_module;
 extern const struct _mp_obj_module_t modturtle_module;
 
 #define MICROPY_PORT_BUILTIN_MODULES \
@@ -139,5 +140,6 @@ extern const struct _mp_obj_module_t modturtle_module;
     { MP_ROM_QSTR(MP_QSTR_matplotlib), MP_ROM_PTR(&modmatplotlib_module) }, \
     { MP_ROM_QSTR(MP_QSTR_matplotlib_dot_pyplot), MP_ROM_PTR(&modpyplot_module) }, \
     { MP_ROM_QSTR(MP_QSTR_time), MP_ROM_PTR(&modtime_module) }, \
+    { MP_ROM_QSTR(MP_QSTR_os), MP_ROM_PTR(&modos_module) }, \
     { MP_ROM_QSTR(MP_QSTR_turtle), MP_ROM_PTR(&modturtle_module) }, \