Giasuddin Selim is a Bangladeshi film director and screenwriter. He is best known for directing Monpura (2009) and Swapnajaal (2018). He won Bangladesh National Film Award twice: Best Story for the film Adhiar (2003) in 2003 and Best Screenplay for Monpura in 2008. His recent film is Kajolrekha (2024).

Selim was born and raised in Feni District. He studied at University of Rajshahi in the marketing department He is an establishment member of 'Bishwabidyalay theatre Rajshahi' at Rajshahi University.

Selim started his career as a scriptwriter. Later he moved on to directing television dramas. His first directed television drama serial was Biprotip. His debut full-length feature film was Monpura, released in 2009.

Gias Uddin Selim is the founder of Bangal Cinema, a film productions. This group of young film makers used to be Selim's assistant directors.