The Mahmoodiah Royal Mausoleum is a Royal Mausoleum of Johor located at Bukit Mahmoodiah in Jalan Mahmoodiah, Johor Bahru, Malaysia. The first Sultan of Johor buried here was Sultan Abu Bakar in 1895. Besides that, the founder of UMNO, Dato' Onn Jaafar (died on 1962) was buried next to his father, Dato Jaafar bin Muhammad's grave (died in 1919).