Dev Keswani is a Hindi tele-serial actor who is noted for his great performances in a number of serials. He was first noticed in the serial 'Annu ki ho gayi Wah Bbhai Wah' as Ashu against Srijita De. The serial was produced by Tony Singh and Deeya Singh for DJ's Creative Unit. It was a serial with a different flavour and was having the right mix of humour and drama. The serial was aired on Star One in 2007-08 and while the serial going full steam, Dev was dropped from the serial all of a sudden and his absence from the screen was immediately noticed by the audiences. Dev was replaced by Amit Verma in the serial.

Almost at the same time, Dev bagged another serial 'Grahasti', where his performance as Raunaq was much appreciated by the viewers as well critics. The serial was aired on Star Plus in 2008 and was a successful family drama. He got inducted into Balaji family with the serial 'Kis Desh Mein Hai Mera Dil'. In this serial Dev portrayed the role of Dheer who has been planted into Juneja family by his businessman brother Rishabh. T was  a negative role and Dev performed this role with equal dexterousness which brought him much accolades. Dev also played the role of Gaurav in 'Bandhan Saat Janmon Ka' against Akansha Milani on Colors Channel popular serial. 

Dev also acted in Chhal-Sheh Aur Maat on Colors, Shubh Kadam on Colors, Creative eye's Babosa Mere Bhagwan on Sony TV, Kahaniyan Bikram Aur Betal Ki on Colors and Silsila Yeh Pyar Ka etc.