Mahmoodiah Royal Mausoleum, Royal Islamic cemetery at Bukit Mahmoodiah, Johor Bahru, Malaysia.

The Mahmoodiah Royal Mausoleum stands on Bukit Mahmoodiah off Jalan Mahmoodiah in Johor Bahru. Its domed main building, erected in 1895, mixes Victorian, Moorish and local Malay styles and holds the tombs of the Sultans and Sultanahs of Johor. Behind it, a walled outer yard called Makam Kota Raja holds graves of other royal kin and state dignitaries.

Built in 1895, the mausoleum received Sultan Abu Bakar, the first Johor ruler buried there, on 4 June 1895. It later took in his successors Ibrahim (1959), Ismail (1981) and Iskandar (2010), plus Sultan Ismail Muabidin Riayat Shah of Perak, exiled after the 1875 killing of British Resident J. W. W. Birch and buried here in 1889 according to the Malay article.

The site is split into two parts: the domed main building holds the tombs of Johor's sultans and sultanas, while a walled outer yard behind it, known as Makam Kota Raja, holds other royal kin and state dignitaries. Sultan Ismail Muabidin Riayat Shah of Perak, exiled after the 1875 killing of British Resident J. W. W. Birch, lies here too.

The mausoleum stands on Bukit Mahmoodiah off Jalan Mahmoodiah, with the domed main building holding the sultan graves and a walled outer yard, Makam Kota Raja, behind it for other royals and state officials. Visitors should dress modestly and keep voices low, as graves are still tended and visited. Shoes come off at the threshold of the domed hall.

The mausoleum holds a Sultan of Perak, Ismail Muabidin Riayat Shah, exiled after the 1875 assassination of British Resident J. W. W. Birch at Pasir Salak, and Raja Mahadi of Klang, defeated in the Klang War and exiled in 1874. Both died away from their own states and were buried here.