Missouri
- Associated Builders and Contractors (ABC) Heart of America Chapter – Apprenticeship Information
- Associated General Contractors (AGC) of Missouri
- Associated General Contractors of St. Louis- Apprenticeships and Journeymen Training
- Boilermakers National Apprenticeship Program (BNAP): South-eastern Area – Boilermakers Field Construction/Repair Apprenticeship
- Heat & Frost Insulators Local 27- Apprenticeships
- Heavy Construction Laborers Union Local 663: Apprenticeship Program
- IBEW Local 257 :Apprenticeships
- Independent Electrical Contractors of Greater Saint Louis (IEC)
- Independent Electrical Contractors of Kansas City, Inc (IEC-KC)
- Ironworkers Local 396 Apprenticeships
- IRONWORKERS: International Association of Bridge, Structural, Ornamental & Reinforcing Iron Workers – Apprenticeship
- Jefferson City Training Center – Carpenters District Council of Kansas City and Vicinity Apprenticeship and Training
- Jefferson College: Apprenticeship Credit Option Program
- Joplin Training Center – Carpenters District Council of Kansas City and Vicinity Apprenticeship & Training
- Kansas City Electrical Joint Apprenticeship and Training Center
- Mason Contractors Association of St. Louis
- MINK Pipe Trades (Missouri, Iowa, Nebraska, Kansas)
- Missouri Valley Line Constructors Apprenticeship and Training Program
- Operative Plasterers' and Cement Masons' International Association (OPCMIA) Local 527
- Plumbers & Pipefitters Local 562
- Roofers Union Local 20- Apprenticeships
- Sheet Metal Workers Local 36- Training Centers and Apprenticeships
- Springfield Training Center – Carpenters District Council of Kansas City and Vicinity Apprenticeship & Training
- St. Louis Carpenters Joint Apprenticeship Program
- St. Louis Community College – Skilled Trades Industrial Apprenticeship Training: Carpenter
- St. Louis Union Roofing Local No. 2
- St.Louis Union Roofing Local NO.2 (Apprenticeship Program) Serving Illinois & Eastern Missouri
- The St. Louis Tile, Marble, and Terrazzo Joint Apprentice Committee
- Union Local 8 Plumbers and Gasfitters Apprenticeships
- Union of Bricklayers and Allied Craftworkers Local #1- Apprenticeships
- United Association Local 178 Plumbers & Pipefitters- Apprenticeships
- United Association Pipefitters Local 533 Apprenticeships and Training Center
- United Association Plumbers & Pipe Fitters Local 178
