Rahayu is an Indonesian and Malay surname and unisex given first name. Notable people with the name include:
Surname Aries Susanti Rahayu (born 1995), Indonesian sport climbing athlete Apriyani Rahayu (born 1998), Indonesian female badminton player
Given name Rahayu Mahzam (born 1980), Singaporean politician Rahayu Supanggah (born 1949), Indonesian composer Amelia Rahayu Murray (born 1993), Indonesian-New Zealander female singer known as Fazerdaze Endang Rahayu Sedyaningsih (1955–2012), Indonesian health minister from October 22, 2009 until April 30, 2012