Rahayu binte Mahzam (Jawi: رحايو مهزم; born 1980) is a Singaporean politician who has been serving as Senior Parliamentary Secretary for Health and Senior Parliamentary Secretary for Law concurrently since 2022. A member of the governing People's Action Party (PAP), she has been the Member of Parliament (MP) representing the Bukit Batok East division of Jurong GRC since 2015.