The Mazarine Stakes is a Thoroughbred horse race at Woodbine Racetrack in Toronto, Ontario, Canada. A Grade III race, it is open to two-year-old fillies. Contested over a distance of 1+1⁄16 miles (8.5 furlongs) on Polytrack synthetic dirt, it currently carries a purse of approximately $114,045.

Run annually in October, the Mazarine Stakes is a prep race for the Breeders' Cup Juvenile Fillies.

Inaugurated in 1965 at Greenwood Raceway, in 1980 it was moved to its present location at Woodbine Racetrack. From 1975 through 1979 it was contested at a distance of one mile (8 furlongs). It was run in two divisions in 1979.

Speed record: (Through 1998, times were recorded in fifths of a second. Since 1999 they are in hundredths of a second)

• 1:43.15 - Knights Templar (2005) (at current distance of 1+1⁄16 miles)

Most wins by an owner:

• 4 - Sam-Son Farm (1986, 1990, 1995, 1999)

Most wins by a jockey:

• 7 - Patrick Husbands (2003, 2004, 2007, 2012, 2013, 2014, 2017)

Most wins by a trainer:

• 9 - Mark E. Casse (2004, 2007, 2012, 2013, 2014, 2016, 2017, 2021, 2022)

• Road to the Kentucky Oaks
• List of Canadian flat horse races

• The 2007 Mazarine Breeders' Cup Stakes at the NTRA
• The Mazarine Breeders' Cup Stakes at Pedigree Query