Marc Denis (born February 19, 1953) is a Canadian bilingual radio and television personality, known on the air as Mais Oui.

[5] A year later, bilingual colleagues Rob Christie and Scott Carpentier joined the station lineup and, together and back-to-back with Marc Denis, branded themselves as La Connection Française.

He also hosted on-air in Toronto from 1997 to 2000, in English on CJEZ 97.3 and, in French, on CJBC 860 in 2001, before returning to resume his broadcast career in Montreal in 2002 with 105.7 Rythme-FM.

[7] On June 6, 2008, Q92's sister station CINW dropped its Talk programming for a "Greatest Hits of the 60s-70s80s" music format, with Marc Denis as the morning host, launching on July 1.

In 2022 and 2023, Marc Denis wrote a memoir recounting his media career adventures and interactions with dozens of music and sports personalities over the decades, titled “Mais Oui Tell You Some Stories?