Ponniah

Ponniah is a Tamil surname. From Tamil pon- ‘gold’ + -aiah an honorific suffix meaning ‘father’ (Sanskrit ārya).

Notable people with the surname include:
 * Joseph Ponniah (born 1952), Sri Lanka Roman Catholic bishop
 * Mano Ponniah (born 1943), Sri Lankan architect, engineer, and cricketer
 * Rennis Ponniah, Singaporean Anglican bishop