Rezaul Karim (, ) is a Bengali masculine given name of Arabic origin. It may refer to:
Rezaul Karim (lawyer) (born 1902), Bengali lawyer and independence activist Rezaul Karim (diplomat) (1935–2005), Bangladeshi diplomat Rezaul Karim Hira (born 1942), Bangladesh Awami League politician A. K. M. Rezaul Karim Tansen (born 1953), Bangladeshi politician Rezaul Karim Chowdhury (born 1953), Bangladeshi politician and mayor of Chittagong A. F. M. Rezaul Karim Siddique (1955–2016), Bangladeshi professor Rezaul Karim Bablu (born 1962), Bangladeshi politician SM Rezaul Karim (born 1962), Bangladeshi minister Rezaul Karim Rehan (born 1968), Bangladeshi footballer Syed Rezaul Karim (born 1971), Bangladeshi Islamic scholar and politician Rezaul Karim Liton (born 1980), Bangladeshi footballer Rezaul Karim Reza (born 1987), Bangladeshi footballer Rezaul Karim Mannan, Bangladeshi politician Rejaul Karim Laskar, Indian politician Md. Rezaul Karim, Bangaldeshi urban planner