Peninsula High School is a public high school on a hill overlooking Henderson Bay and Burley Lagoon, in Purdy, north of the city of Gig Harbor, Washington, USA.

Peninsula High School was built in 1947 in its current location above Burley Lagoon on Purdy Drive.

After Gig Harbor High School was opened in September, 1979, 4 miles to the south, students living south of North Harborview Drive in downtown Gig Harbor and Fox Island attended the new high school.

The 2012 team was beaten in the semi-finals of the 3A State Championships by Bellevue, who then went on to win the title over North Bend, Washington's Mount Si Wildcats.

The football team also won back-to-back SPSL 3A championships in their 2012 and 2013 seasons, both wins were over the Lakes Lancers of nearby Lakewood, Washington.