- American River College – Apprenticeship Programs (pdf)
- Associated Builders and Contractors (ABC) Golden Gate Chapter – Apprenticeships (Electrical, Carpentry, Painting, Plumbing & Construction Craft)
- Associated Builders and Contractors (ABC), San Diego Chapter – Apprenticeship
- Associated Builders and Contractors, Southern California Chapter – Apprenticeships
- Bakersfield College – Degrees and Certificates
- Bay Area Roofing & Waterproofing Apprenticeship Program
- Blue Ribbon Committee on Women in Apprenticeship
- Bricklayers and Allied Craftworkers Local #4 Southern California
- Bricklayers and Allied Craftworkers Local 3 – Apprenticeships
- Building California Construction Careers: Pre-Apprenticeship Programs
- California Apprenticeship Coordinators Association
- California Apprenticeship Council (CAC)
- California Autobody Association – Apprenticeship Information
- California Automotive Apprenticeship
- California Construction and Industrial Materials Association (CALCIMA)
- California Department of Industrial Relations – Apprenticeship program information
- California Department of Industrial Relations – Division of Apprenticeship Standards
- California Department of Industrial Relations -Division of Apprenticeship Standards – Veterans
- California Department of Industrial Relations: Apprenticeship Programs for Veterans
- California Electrical Joint Apprenticeship and Training Committee
- California State Pipe Trades Council
- California Tile, Marble, Terrazzo Union Local # 18 – Apprenticeships
- California Tradeswomen Inc.
- California Women In Non-Traditional Employment Roles
- California/Nevada Electrical Joint Apprenticeship Training Committee (Riverside, CA)
- Carpenters Training Committe for Northern California
- College of Alameda (Peralta Community College District) – Apprenticeship Program
- College of San Mateo – Apprenticeship Training
- Cypress Mandela, Inc. Training Center
- Diablo Valley College – Architecture, Engineering, Engineering Technology, Construction, and Apprenticeship Department
- Foothill College – Apprenticeship Programs
- Fresno Area Electrical Training Center (FAETC)
- Full Belly Farm – Jobs & Apprenticeships (Guinda, CA)
- I Built It! Apprenticeship Opportunities
- Imperial Valley College – Apprenticeship Program Trades/Industries
- Inland Empire Joint Apprenticeship Training Center (Electrical Construction Industry)
- International Association of Bridge, Structural, Ornamental and Reinforcing Ironworkers – Local Union No. 118 (Sacramento, CA)
- International Association of Bridge, Structural, Ornamental and Reinforcing Ironworkers – Local Union No. 229 (San Diego, CA)
- International Brotherhood of Electrical Workers Local 569
- International Brotherhood of Electrical Workers Locall 11 – Los Angeles
- International Union of Operating Engineers Local 39
- Ironworkers Local 377 – San Francisco
- Ironworkers Local Union 155 (Fresno, CA)
- IRONWORKERS: International Association of Bridge, Structural, Ornamental & Reinforcing Iron Workers – Apprenticeship
- Laney College (Peralta Community College District) – Mill and Cabinetmaker Apprentice Program (Oakland, CA)
- Laney College – Plumber Training
- Local 250 Joint Journeyman Apprentice Training Center – Air Conditioning and Refrigeration
- Los Angeles Trade-Technical College – Apprenticeship Programs
- National Electrical Contractors Association (NECA) Los Angeles County Chapter
- National Electrical Contractors Association – California Central Coast Chapter
- National Tooling and Machining Association – Machinist Training Center of Southern California
- Northern California Cement Masons Joint Apprenticeship & Training Committee
- Northern California Valley Sheet Metal, Heating and Air Conditioning Training Center
- Operative Plasterers and Cement Masons International Association (OPCMIA) Local 755
- Operative Plasterers' and Cement Masons' International Association (OPCMIA) Local 400
- Operative Plasterers' and Cement Masons' International Association (OPCMIA) Local Union 600
- Operative Plasters' and Cement Masons International Association (OPCMIA) Local 300
- Operatives Plasterers' and Cement Masons International Association (OPCMIA) Local 200
- Plasterers & Shophands Union Local 66
- Plumbers & Pipefitters Local 442 (Modesto, CA)
- Reinforcing Ironworkers Local 416
- Sacramento Area Electrical Training Center
- San Diego City College – Apprenticeship Program
- San Francisco Building & Construction Trades Council
- Santiago Canyon College – Apprenticeship Program (Orange, CA)
- Sheet Metal Workers (Southern California) – Local 105 – Apprenticeship
- Sheet Metal Workers International Association Local No. 105
- Sheet Metal Workers' Local Union No. 104
- South Bay Plastering Contractors Association (SBPCA)
- Southern California Surveyors Joint Apprenticeship Committee
- Southwest Carpenters Training Fund – Apprenticeships
- Sprinkler Fitters UA Local 709 (Whittier, CA )
- Sprinklerfitters & Apprentices San Francisco Bay Area Local 483
- State Building & Construction Trades Council of California
- Steam Refrigeration Air Conditioning Pipefitters Local Union 250
- STRIPE – Build Your Future (Pre-Apprenticeship Program)
- Tradeswomen, Inc.: California's first organization for women in the trades
- United Association of Journeyman & Apprentices Plumbing & Pipefitting Industry Local 364 (Colton, CA)
- United Association of Journeymen & Apprentices Plumbing & Pipefitting Local 38 (San Francisco, CA)
- United Association Plumbers & Steamfitters Local 159 (Martinez, CA)
- United Association Plumbers Local 78 (Los Angeles, CA)
- United Association Plumbers, Pipefitters, Steamfitters, Sprinklerfitters & Service Technicians Local 246 (Fresno, CA)
- United Association Plumbers, Steamfitters & Refrigeration Fitters Local 393 (San Jose, CA)
- United Association Plumbers, Steamfitters, & Refrigeration Fitters Local 467 (Burlingame, CA)
- United Association Plumbers, Steamfitters, HVACR & Apprentices Local 230 (San Diego, CA)
- United Association Steamfitters, Welders, Refrigeration Fitters Local 250 (Gardena, CA)
- United Union of Roofers Waterproofers and Allied Workers Local 95
- University of California, Santa Cruz – The Center for Agroecology & Sustainable Food Systems
- Ventura County Electrical Joint Apprenticeship Training Committee – IBEW Local 11: Apprenticeships
- Western Electrical Contractors Association, Inc. (WECA-IEC)
- WoodIndustryEd.org: The Portal for Woodworking and Related Industries Education & Training Information
