Michael John "Jack" Roy Duavit (born February 20, 1970) is a Filipino politician who is serving as the representative of Rizal's 1st congressional district since 2016, and previously from 2001 to 2010.

He was also the chairman and managing director of Puresound Trading, Inc. Duavit managed as director for several private institutions, such as GMA Network, Inc., Vigil Inc., Citynet Television, Inc., Rosmar Holdings, Inc. GMA New Media, Inc., and Social Investments Fund at Group Management & Development, Inc. Duavit was also the trustee of GMA Foundation, Inc., and Guronasyon Foundation, Inc.[1][2] In the 2001 local elections, Duavit ran for the position of district representative for the 1st District of Rizal under the Nationalist People's Coalition and eventually winning the seat.

[5] In 2020, after Alan Peter Cayetano lost the speakership, he was replaced by Jack Duavit as the caretaker of the first congressional district of Camarines Sur.

[6] In 2021, Duavit was asked by the Nationalist People's Coalition to reach out to his party mates, concerning that the cha-cha initiative is only limited to the economic provisions of the Constitution.

[10] In his second full term, Duavit is one of the vice chairmen of the House Committee on Appropriations and a member of the Ways and Means, Trade and Industry, Basic Education, Economic Affairs, Banks and Financial Intermediaries, Information and Communications Technology, Public Works and Highways and Southern Tagalog Development house committees.