| Frontenac Secondary School | |
| Address: | 1789 Bath Road |
| Superintendent: | Richard Holmes |
| Trustee: | George Beavis |
| School Number: | 911135[1] |
| Principal: | James Bonham-Carter |
| President: | Sam Coffey and Kerry Readwin |
| Grades: | 9–12 |
| Enrollment: | 1,106 |
| Enrollment As Of: | September 2011 |
| Campus Type: | Suburban |
| Area: | Auden Park |
| Colours: | Grey Garnet |
| Affiliations: | KASSAA, EOSSAA, OFSAA |
| Mascot: | Freddy the Falcon |
| Team Name: | Falcons |
Frontenac Secondary School is a high school in the west end of Kingston, Ontario, Canada. The Limestone District School Board operates it. The team plays under the nickname "Frontenac Falcons".
Frontenac Secondary School was founded in 1957 as Collins Bay High School and adopted its current name in 1964. In 2006, construction began on a major extension, which includes a new library, a media room, an elevator, and several additional computer labs and classrooms.
Every year, Frontenac has junior and senior teams that compete in the Canadian game show Reach for the Top. In 1998–99, the senior team was the national champion. The team had qualified for the American game show Whiz Quiz. In 2007 and 2008, the senior REACH team was the international Whiz Quiz champions, and in 2006 and 2007, they attended the provincial REACH Championships.