A. T. M. Shamsuddin (1927–2009), also known by the pen name Charubak, was a Bangladeshi author, journalist, translator, communist and union organizer.
[1] He served as the general secretary of the East Pakistan Journalists Union and as a member of the Chittagong All Party Language Movement Committee.
His father remarried to Shamsuddin's mother's cousin, who also later died; he was raised in his maternal uncle's household.
Qazi Anwar Hussain inspired him and beginning in 1987, he wrote stories of Batamul in Rohosho Potrika.
He made many translations including Pakistan Jakhan Bhanglo, the memoirs of Lt. Gen. Gul Hassan Khan.