Shubhashish Mazumder Bappa (born 5 February 1972), better known as Bappa Mazumder, is a Bangladeshi singer, lyricist and music composer. He is the lead singer of the rock band Dalchhut, which he formed in 1996 with Sanjeeb Choudhury.

Mazumder won Bangladesh National Film Award for Best Music Composer for the song "Na Jani Kon Oporadhey" in the film Swatta (2017).

Shubhashish Mazumder Bappa was born on 5 February 1972 to the musician couple, Barin Mazumder and Ila Mazumder. His elder brother, Partha Pratim Majumder, is a mime artist. His other brother, Partha Sharothi Mazumder, is a music composer from whom he took his first guitar lessons.

In 1996, Mazumder released his first album Tokhon Bhor Bela.

In 1997, Mazumder released his second album Kothao Keu Nei.

In 1998, Mazumder released his third album Hridoyer Canvas.

In 1999, Mazumder released his fourth album Rater Train.

In 2001, Mazumder released his fifth album Dhulo Pora Chithi.