Alexis Dubus (born 1979) is an English alternative comedian and actor known for his French alter ego Marcel Lucont.

Born in Buckinghamshire, he studied Philosophy and Psychology at the University of Warwick, where he became part of the sketch troupe Ubersausage. In 2003 he set up Falling Down With Laughter Comedy Club in London Bridge with fellow comedian Sy Thomas. The club ran until 2010.

He is a board member of The Alternative Comedy Memorial Society, at which he has appeared in various guises.

Dubus studied Le Jeu and Clowning at École Philippe Gaulier under master clown Philippe Gaulier.

His television acting roles include Nathan Barley (Channel 4), Pramface (BBC3), Derek (Channel 4) and Red Dwarf XI (Dave). As a stand-up comedian he's appeared on John Bishop's 2014 Christmas Show, Set List, Russell Howard's Good News and various stand-up shows on Comedy Central. He was also a regular on series 2 and 3 of Live at the Electric.

He performed at the Adelaide Fringe for several years, where he stirred local debate in 2016 after saying that the festival had lost its way, making it increasingly difficult for independent producers to make money. He returned to perform in the 2018 Fringe, praising a new initiative which helped to put more money in the artists' pockets by dropping inside ticket charges, but left disappointed that the festival was still not suited to independent producers and venues, losing track of the reason for its initial inception.