Ontario High School - Class of 2003 Alumni

Join thousands of alumni from Ontario High School and the Class of 2003. Reconnect with classmates, photos, yearbooks, upcoming reunions.

Varsity Football Schedule 2026-27

08/27 vs McLoughlin
09/03 vs Payette
09/10 vs Burns

Upcoming Class of 2003 Reunions

Browse past reunion events and photos for your class here.

Past Class of 2003 Reunions

Browse past reunion events and photos for your class here.

Ontario '03 Apparel

Browse our apparel store for a wide range of Tigers gear, from t-shirts and hoodies, to caps and accessories.

Class Yearbook

View past yearbooks

Connect with Class of 2003 Classmates

Walter Juarez

Eric Avila

Kenneth Pfaff

Nearby Ontario Classmates

Class of 2001

13 classmates have joined

View Class of 2001 Alumni

Class of 2002

2 classmates have joined

View Class of 2002 Alumni

Class of 2004

6 classmates have joined

View Class of 2004 Alumni

Class of 2005

9 classmates have joined

View Class of 2005 Alumni