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Stephen Lewis Secondary School
Address
555 Autumn Hill Boulevard Thornhill , Ontario , L4J 8X2 Canada
Coordinates	43°50′11″N 79°28′34″W / 43.83639°N 79.47611°W / 43.83639; -79.47611
Information
School type	Public high school
Founded	2006
School board	York Region District School Board
Superintendent	Steve Gardner
Area trustee	Estelle Cohen
School number	945508
Principal	Todd Taylor
Grades	9-12 (As of January 2023)
Enrolment	1745 (October 2021)
Language	English
Area	Thornhill, Ontario
Colour(s)	Royal Blue, Black, Silver, White
Mascot	Shark
Team name	Sharks
Website	www.yrdsb.ca/schools/stephenlewis.ss/Pages/default.aspx
Last updated: October 2023

Stephen Lewis Secondary School is a public semestered high school in Vaughan, Ontario, Canada administered by the York Region District School Board. Currently, the school enrols students in grades 9, 10, 11 and 12 all of which are from the 'Vaughan Block 10' region. The school is named for Canadian statesman Stephen Lewis.

The school opened for service on September 5, 2006, and was officially designated May 8, 2007.

• Denis Shapovalov, tennis player, winner of 2016 Junior Wimbledon Singles Finals ^[1] and 2015 US Open Junior Doubles Finals. ^[2]

• Education in Ontario
• List of secondary schools in Ontario