Zainudin bin Haji Ismail (19November 19595December 2017) was a Malaysian politician from Negeri Sembilan. He was a Member of Parliament Jelebu from May 2013 to December 2017 representing the Barisan Nasional (BN) from United Malays National Organisation (UMNO).
He died on 5 December 2017 at the age of 58 due to a brain tumor.
Due to he died less than two years before Parliament was dissolved, the Election Commission of Malaysia did not hold a by-election to fill the vacant seat.