Sasmita Loka Ahmad Yani Museum, Military history museum in Menteng, Indonesia.

The Sasmita Loka Ahmad Yani Museum is a colonial-era building in Menteng that documents the life of an Indonesian military leader. Inside, visitors find his personal items, photographs, and documents displayed throughout the rooms.

Built around 1930–1940 during the development of Menteng and Gondangdia, the house first served as a residence for officials of Dutch or European private companies. In the 1950s it was managed by the Army Housing Service and became the home of Lieutenant General Ahmad Yani, Army Chief of Staff. On 30 September 1965 he was killed here by members of the 30 September Movement; the house later opened as a museum.

The rooms are arranged as General Ahmad Yani used them daily, with original furniture and belongings remaining in their historical positions. Visitors experience how a high-ranking military leader lived at that time and how the space functioned in everyday life.

The museum is located in Central Jakarta and is easy to reach; visitors should plan for limited opening hours that focus on morning times. It helps to arrive early since the rooms are small and visitor numbers can be restricted at times.

In the bedroom, the automatic Thompson used by the Cakrabirawa troops is displayed with its spent bullets, beside a Czechoslovak-made LE Cal 7.62 rifle used to kill Lt. Gen. S. Parman and an Owen gun used against DN Aidit. A replica of the short-sleeved nightgown Mrs. Yani wore while cleaning her husband's blood from the floor is also kept there.