Nicolas Petitfrère, better known as Nömak, is a French artist and producer. He is also known under the stage name Ö.

He was part of electronic duo Alesia and the French future-bass quartet Point Point. In 2015 he released his first EP, Weight Loss Program.

In 2017, Nömak began working with British producer A. G. Cook on music for Charli XCX, notably “Lucky” off her 2017 Pop 2 project. He has since written and produced songs for XCX, Cook, Jónsi, Palmistry, and Lolo Zouaï.