| Atwater High School | |
| Streetaddress: | 2201 Fruitland Avenue |
| County: | (Merced County) |
| Zipcode: | 95301 |
| Country: | USA |
| Ceeb: | 050172 |
| Principal: | Alexie Parle |
| Teaching Staff: | 96.19 (FTE) |
| Enrollment: | 2,095 (2022–2023)[1] |
| Ratio: | 21.78 |
| Campus: | Suburban |
| Colors: | Royal blue and white |
Atwater High School is a secondary school in Atwater, California, United States. It is a part of the Merced Union High School District. AHS competes as a member of the Central California League of the Sac-Joaquin Section.