The Tuanku Ja'afar Royal Gallery () is a gallery in Seremban, Negeri Sembilan, Malaysia. The gallery is about the former Negeri Sembilan Yang di-Pertuan Besar Tuanku Ja'afar.
The gallery building started its construction on 2 May 2012 and completed in 2013. The first phase of the gallery was opened on 4 December 2014 by Tunku Ampuan Besar of Negeri Sembilan Tuanku Najihah.
The building has a concept of modern colonial architecture. The gallery is housed in a three-story building with an area of 4,087 m2 and divided into 9 exhibition halls. Six exhibitions hall are available for visitor viewing while another three halls are still under construction, which are:
The gallery exhibits the private collections and life of Tuanku Ja'afar.
The gallery is within walking distance north east of Seremban railway station.