Kayao is a department or commune of Bazèga Province in central Burkina Faso. Its capital lies at the town of Kayao. According to the 1996 census, the department has a total population of 37,615.

Towns and villages

• Kayao
• Dapoury
• Doundouni
• Goumsin
• Ilyalla
• Kilou
• Kinkirou
• Kossilci
• Kossoghin
• Koukoulou
• Lado
• Pinghin
• Poa
• Rellou
• Sancé
• Sondré
• Singdin
• Tim-Tim
• Yada
• Yallo-Gouroungou
• Yellou
• Yéaoanga
• Gomogho
• Goumsa