Sulu is a province of the Philippines.

Sulu may also refer to:

• Sulu Archipelago, in the Philippines
• Sulu Sea, in the southwestern area of the Philippines
• Apostolic Prefecture of Sulu, a Catholic missionary jurisdiction in the Sulu Archipelago from 1953 to 1958
• Sultanate of Sulu (1457–1917), in the Philippines
  • Royal House of Sulu of the Sultanate of Sulu

• Sulu, Rapla County, village in Märjamaa Parish, Rapla County, Estonia
• Sulu, Tartu County, village in Kambja Parish, Tartu County, Estonia

• Aytaç Sulu (born 1985), German-Turkish football player
• Suluk (Turgesh khagan), or Sulu (died c. 738), leader of the Turgesh confederation

• Hikaru Sulu, fictional character in Star Trek
• Sulu (Captain Underpants)
• Titular character of the 2017 Indian film Tumhari Sulu

• Sulu (skirt), a garment worn in Fiji

• Zulu (disambiguation)