Johor Grand Palace, Royal palace in Johor Bahru, Malaysia.

Johor Grand Palace is a royal residence in Johor Bahru distinguished by its blue-domed roof and white exterior walls that overlook the Johor Strait. The building merges European and Malay architectural elements through angular lines and proportions that shape its distinctive profile.

Sultan Abu Bakar broke ground for the palace in 1864, and it was completed in 1866 by builder Wong Ah Fook. It served as the official residence of the Sultan of Johor until Istana Bukit Serene was finished, and it also housed the state administration. A hall beside the main building, completed in 1875, held the state treasury and government departments.

The palace's name, Istana Besar, means "Grand Palace" in Malay. Its grounds also hold Istana Zaharah and Balai Zaharah, named after Ungku Zaharah, Sultan Abu Bakar's younger sister, whose relatives moved there from Telok Blangah. Istana Marbal takes its name from Marlborough House in London and now houses the office of the Johor Palace Garden Department.

The palace is not open to regular tourists as it functions exclusively for royal ceremonies, state receptions, and official events. Visitors can view and photograph the exterior from public vantage points while maintaining appropriate distance from the grounds.

The Royal Abu Bakar Museum was renovated into a museum in 1982 and officially opened in 1990, but it has been closed to the public since January 2012. Sultan Iskandar had ordered the palace turned into a royal museum for the people, yet the building still hosts investitures and royal ceremonies.