North Mason High School is a public high school located in Belfair, Washington. It was constructed in 1982-1983 as part of North Mason School District and was replaced in fall of 2015 as a 95,000 square foot building for grades 9-12. It is one of two high school in the district.

North Mason High School was first constructed in 1982–1983 to house 340 students.^[2][3] By 2015, the school population was between 650 and 700 students, but school construction bonds failed to pass in 2002, 2006, and 2008. A new 120,000 square foot building at the cost of $30 million was finished in 2015 to house the students at double the size of the old school.^[2]

North Mason High School offers various athletic programs including: Boys Cross Country, Girls Cross Country, Football, Cheer, Girls Soccer, Boys Tennis, Girls Volleyball, Boys Basketball, Girls Basketball, Girls Bowling, Boys/Girls Wrestling, Boys Baseball, Girls Fastpitch, Boys/Girls Golf, Boys Soccer, Girls Softball, Girls Tennis, and Boys/Girls Track.

In the 2021-2022 school year, 52.5% of the students at NMHS were male, 47.2% were female, and 0.3% were Gender X. 1.5% were Native American, 1.5% were Asian, 0.7% were Native Hawaiian/Other Pacific Islander, 24.9% were Hispanic/Latino, 1.0% were Black, 64.6% were White, and 5.7% were Two or More Races.^[4]

• CJ Allen, professional hurdler