- Caltrans District 12 - Orange County - Orange County District of California's Department of Transportation, includes information on freeway construction and road closures in Orange County.
- F.A.I.R. Transit - Fund Alternatives Instead of Rail - An association opposed to light rail in Orange County. Includes articles, contacts, route map, environmental impact report, drawings, opponents and mailing list.
- Go Rent-a-Van. - Specializing in renting vans and sport utility vehicles.
- John Wayne Airport - General information on Orange County's John Wayne Airport (SNA), including timetables and other useful information
- Open Water Plan - South County Association of Municipalities' (SCAM) plan for the conversion of Newport Harbor from yacht harbor to deep water port.
- Orange County Transportation Authority - Local bus agency. Includes schedules, fares, and route information.
- Transportation Corridor Agencies - Builds and manages toll roads in the county. Includes toll and transponder information, proposed extensions, and discounts.
