Kastriot Muhamet Islami (born 18 August 1952) is an Albanian politician.

Formerly a member of the Communist Party of Albania, turned moderate Socialist.

On April 3, 1992, when the last communist president, Ramiz Alia resigned, Islami served as acting president for three days.

During the presidency of Sali Berisha (1992–1997), Islami had no important positions in the government, but from 1997 to 2005 he was an important person in the government again holding several Ministerial positions in the Socialist "NANO government".

Most prominently he was foreign minister from 2003 to 2005, but lost his position in the cabinet when a new government was formed with Berisha as prime minister after the 2005 elections.