Ibrahim ibni Iskandar (born Tunku Ibrahim Ismail ibni Tunku Mahmood Iskandar, 22 November 1958) is King of Malaysia and Sultan of Johor.
Ibrahim was born during the reign of his great-grandfather, Sultan Sir Ibrahim, and became heir apparent when his father, Sultan Iskandar, acceded to the throne of Johor in 1981. He was named Crown Prince of Johor on 3 July 1981. He was educated at Trinity Grammar School in Australia. In 1982, he married Raja Zarith Sofiah. They had six children, including Ismail Idris and Aminah Maimunah Iskandariah.