Kiir may refer to:
People Avo Kiir (born 1952), Estonian Lutheran clergyman and politician Mayan Kiir (born 1998), South Sudanese-American professional basketball player Philip Akot Akok Kiir (born 1937), South Sudanese pastor, former educator, and politician Salva Kiir Mayardit (born 1951), commonly known as Salva Kiir, President of South Sudan Sylvester Madut Abraham Ayuel Kiir (born 1933), South Sudanese educationist
Fictional characters
Georg Adniel Kiir, in several Estonian films, played by Margus Lepa
Other uses
Kiir River or Bahr al-Arab, a river that flows through the southwest of Sudan