Ismail bin Marjan (7 June 1920 – 25 January 1991) was a badminton player from Malaya/Singapore who had won many individual and doubles titles at local, regional and international competitions throughout the 1940s and 1950s.

He was best known for his doubles prowess as he partnered Ong Poh Lim to win several major honors in Asia and Europe.

He later competed at the junior levels of the Johore Bahru District and Malays' Championships[4][5] and found success in both the boys' singles and doubles events.

[11] In 1952, he became world champion with the team of Malaya in the Thomas Cup[12] and won his second consecutive Denmark Open men's doubles titles with Ong.

In the 1951 French Open men's singles semi-final, Ismail gave Ong a walkover so that the latter would be better rested for his final match against Wong Peng Soon.

[21] Ismail died on 25 January 1991 at the Singapore General Hospital due to heart and stomach illness.