Category:Organizations based in Orange County, California

• Companies based in Orange County, California (17 C, 61 P)
• Emergency services in Orange County, California (1 C, 13 P)

A

• Organizations based in Anaheim, California (2 C, 3 P)

F

• Organizations based in Fullerton, California (1 C, 3 P)

G

• Organizations based in Garden Grove, California (3 P)

I

• Organizations based in Irvine, California (1 C, 10 P)

O

• Organizations based in Orange, California (1 C)

R

• Roman Catholic Diocese of Orange (20 P)

S

• Organizations based in Santa Ana, California (1 C, 9 P)
• Sports clubs and teams in Orange County, California (13 C, 22 P)

V

• Việt Nam Quốc Dân Đảng (5 P)

B

• Bahia Corinthian Yacht Club
• Balboa Bay Club
• Balboa Yacht Club

I

• Institute for Healthcare Advancement

J

• John D. Cooper Archaeological and Paleontological Center

L

• Lockman Foundation

M

• Music Saves Lives

N

• Newport Harbor Yacht Club

O

• OC Parks
• Orange County Cousins Club
• Orange County Employees Association
• Orange County Labor Federation

P

• Public Enemy No. 1 (gang)

R

• Roman Catholic Diocese of Orange

S

• St. Michael's Abbey (Orange County, California)
• South Coast Air Quality Management District

T

• Third Republic of Vietnam
• Toastmasters International
• Tustin Playbox

V

• Việt Nam Quốc Dân Đảng
• Voice of OC