Ouellet is a French Canadian surname common to Quebec; it traces back to a common ancestor, René Hoûallet, who came to New France in the 17th century. The surname exists also in other forms: Ouellette, Ouellon, Houal(l)et, Willett(e).
It may refer to:
André Ouellet (b. 1939), Canadian politicianCarl Ouellet (b. 1967), Canadian wrestlerChristian Ouellet (b. 1934), Canadian politicianDavid George Ouellet (1944–1967), American Medal of Honor recipientFernand Ouellet (b. 1926), Canadian author and educatorJean-Pierre Ouellet (b. 1946), Canadian politicianMarc Ouellet (b. 1944), Roman Catholic CardinalMaryse Ouellet (b. 1983), Canadian professional wrestlerMaxime Ouellet (b. 1981), Canadian ice hockey playerMichel Ouellet (b. 1982), Canadian ice hockey player