Zainudin bin Nordin (Jawi: زاينودين نوردين; born 3 July 1963) is a Singaporean former politician who served as Mayor of Central Singapore District.

Zainudin was part of the five-member PAP team and became a Member of Parliament for Bishan–Toa Payoh GRC representing the Bishan North ward between 25 October 2001 to 19 April 2011 due to a walkover.

Zainudin retired from politics prior to the 2015 general election, citing wanting to spend more time with his family.

[2] In April 2017, Zainudin was arrested, along with three others, for suspected misuse of funds at Tiong Bahru Football Club.

[5] Zainudin is currently the chief strategy officer at food and beverage group, Iron Chef F&B.