Ontario High School - Class of 2004 Alumni
Join thousands of alumni from Ontario High School and the Class of 2004. Reconnect with classmates, photos, yearbooks, upcoming reunions.
Varsity Football Schedule 2026-27
08/27 vs La Sierra
09/03 vs Jurupa Valley
09/10 vs Pacific
09/16 vs Montclair
10/01 vs Duarte
10/08 vs Sierra Vista
10/14 vs La Puente
10/22 vs Azusa
10/29 vs Wilson (Hacienda Heights)
Upcoming Class of 2004 Reunions
Browse past reunion events and photos for your class here.Past Class of 2004 Reunions
Browse past reunion events and photos for your class here.Class Yearbook
View past yearbooks
Recently joined '04 Classmates
Alex Garcia
Class of 2004
Ernesto Torres
Class of 2004
Margarita Zeledon
Class of 2004
Stephanie Aros
Class of 2004
Gregory Ramirez
Class of 2004
Lonnishia Lonnishia K Washington
Class of 2004
Cortney Whitley
Class of 2004
David Guzman
Class of 2004
Connect with Class of 2004 Classmates
Nearby Ontario Classmates
Class of 2002
38 classmates have joined
Class of 2003
28 classmates have joined
Class of 2005
16 classmates have joined
Class of 2006
19 classmates have joined