Syed Mainul Hossain (5 May 1952 – 10 November 2014) was a Bangladeshi structural engineer and architect.

He is the designer of the National Martyrs' Memorial, one of the national landmarks of Bangladesh.

[2] He was posthumously awarded the Independence Day Award in 2022.

Buildings on which Hossain was involved with design include: Hossain died of a heart attack on 10 November 2014 at the National Institute of Cardiovascular Diseases in Dhaka, at the age of 63.

[3] He was buried at the Martyred Intellectuals Memorial in Mirpur.