Marina Sergeyevna Maximova (also spelled Maksimova; Russian: Марина Сергеевна Максимова; born 10 June 1983), better known under her stage name MakSim (Russian: МакSим; earlier – Maxi-M) is a Russian singer, songwriter, and music producer.

MakSim rose to fame in the Russian-speaking world in the mid-2000s after releasing her debut album Trudnyi vozrast in 2006. She went on to release a string of successful singles afterwards, including "Moy ray", "Znayesh li ty" and "Vetrom stat'", which all topped the TopHit radio charts. Between 2007 and 2010, she enjoyed the peak of her career. In 2007 and 2008, MakSim won the award for Best Female Russian Singer at the MTV Russia Music Awards and in 2008 and 2009 won the same prize at the Muz-TV Music Awards, also winning the prize for Best Album in 2008 for Moy ray.