O'Dea High School is a Catholic all boys high school founded in 1923 and is located in Seattle's First Hill neighborhood.

Of its 480 students in four grades in 2022, 56% were Catholics, 53% were Caucasian, 16% were African American, and 19% were multi-racial.

A list of some O'Dea Clubs:[10] O'Dea High School has had many notable alumni go on to great success in College and Professional athletics.

A list of currently offered sports by season:[5] In 2012, the principal of O'Dea at the time, Brother Walczak was accused of sexually abusing a minor in the 1970s.

Walczak denied the allegations but resigned as principal.