Olentangy High School is a public comprehensive high school located in Powell, Ohio and is the second of four high schools in the Olentangy Local School District.
- Founded: 1953
- School district: Olentangy Local School District
- Principal: Robert Griffiths
- SRO Deputy James Mox
- Enrollment 1,449 (fall 2021)
- Athletics conference: Ohio Capital Conference
- Colors: Gold, Blue
- Mascot: River Hawk
- Team Name: Braves
- Feeder Schools: Berkshire Middle School, Hyatts Middle School, Liberty Middle School, Orange Middle School, Shanahan Middle School.
