This paper gives a comprehensive overview and understanding related with mixed convection in cylinders. About onehundred
papers which are published in different local and international journals and conferences started from the past
decade until the recent years are collected and described in various sections to give both researchers and readers a good
overview and a solid background about mixed convection flow and heat transfer in cylinders to develop their future
researches. In addition, the papers reviewed including numerical, analytical and experimental works related with mixed
convection in cylinders are grouped into categories which collect papers with the same research subject. Moreover,
mixed convection in horizontal , vertical and rotating cylinders subjected to a different boundary conditions as well as
cylinders embedded inside a channel , annulus and cavity are described and reviewed.