Mizan Rahman (in Bengali: মীজান রহমান) was a Bangladeshi-Canadian mathematician and writer. He specialized in fields of mathematics such as hypergeometric series and orthogonal polynomials. He also had interests encompassing literature, philosophy, scientific skepticism, freethinking, and rationalism. He co-authored Basic Hypergeometric Series with George Gasper. This book is widely considered as the standard work of choice for that subject of study. He also published several Bengali books.

Apart from his teaching and academic activities, Rahman wrote on various issues, particularly on those related to Bangladesh. He contributed to Internet blogs and various internet e-magazines, mainly in the Bengali language, covering his interests. He was a prolific writer and a regular contributor to Porshi, a Bengali monthly publication based in Silicon Valley, California. He was also the member of the advisory board of the Mukto-Mona, an Internet congregation of freethinkers, rationalists, skeptics, atheists and humanists of mainly Bengali and South Asian descent.