Affiliated Unions

Amalgamated Transit Union
- ATU Local #19
- ATU Local #662
- ATU Local #1001
American Federation of Government Employees
- AFGE Local #252 U.S. Dept of Education
- AFGE Local #695 U.S. Mint
- AFGE Local #709 DOJ
- AFGE Local #898 DOL
- AFGE Local #925 USDA
- AFGE Local #1014 VA
- AFGE Local #1105
- AFGE Local #1114
- AFGE Local #1116
- AFGE Local #1117
- AFGE Local #1127 TSA
- AFGE Local #1169
- AFGE Local #1194
- AFGE Local #1345 DOD
- AFGE Local #1867 DOD
- AFGE Local #2040
- AFGE Local #2186 DOC
- AFGE Local #2241 VA
- AFGE Local #2433 DOD
- AFGE Local #2477 DOD
- AFGE Local #3230 EEOC
- AFGE Local #3275 GSA
- AFGE Local #3392 GPO
- AFGE Local #3416 DOL
- AFGE Local #3499 USDA
- AFGE Local #3607 EPA
- AFGE Local #3806 ID
- AFGE Local #3824 DOE
- AFGE Local #3972 HUD
- AFGE Local #4012
- AFGE Local #4014 USCIS
- AFGE Local #4016
American Federation of Musicians
- AFM Local #154 Pikes Peak Musicians Association
- AFM Local #20-623 Denver Musicians’ Association
American Federation of State, County and Municipal Employees
- AFSCME Local #155D Pueblo Housing Authority
- AFSCME Local #155H Pueblo District 60 Food Services
- AFSCME Local #158 City of Denver
- AFSCME Local #535 Denver Housing Authority
- AFSCME Local #547 Lake County School District
- AFSCME Local #857 Pueblo County Road and Bridge
- AFSCME Local #1045 Pueblo Water
- AFSCME Local #1074 City of Trinidad
- AFSCME Local #1144 Commerce City
- AFSCME Local #1335 Pueblo County Human Services
- AFSCME Local #1572 University of Denver
- AFSCME Local #1605 Cherry Creek School District
- AFSCME Local #1712 City of Pueblo
- AFSCME Local #3927 Adams County Human Services
American Federation of Teachers
- AFT Local #203 Vocation Teachers Federation
- AFT Local #858 Denver Federation of Teachers
- AFT Local #1433 CU Faculty Federation
- AFT Local #1876 - CO WINS
- AFT Local #2265 Douglas County Federation of Teachers
- AFT Local #4462 Trinidad Federation of Teachers
- AFT Local #4463 Denver Federation of Paraprofessionals
- AFT Local #4520 Elizabeth Federation of Teachers
- AFT Local #6186 Colorado Classified School Employees Association
- AFT Local #6321 Metropolitan State Faculty Federation
- AFT Local #6463
- AFT Local #6541
- AFT Local #8005
American Postal Workers United
- APWU Local #229 Denver Metro
- APWU Local #247 Colorado Springs Area
- APWU Local #436 Pueblo Area
- APWU Local #539 Fort Collins
- APWU Local #600 Western Colorado Area
- APWU Local #3477 Littleton
- APWU Local #6315 Aurora
- APWU Local #7029 Denver Bulk Mail Center
Air Line Pilots Association, International (ALPA)
Bakery, Confectionery, Tobacco Workers and Grain Millers International Union
- BCTGM Local #26
Communications Workers of America
- CWA Denver Mailers Union Local #8
- CWA Local #7055 Meow Wolf Workers Collective
- CWA Local #7211 United Soccer League Players Association
- CWA Local #7590
- CWA Local #7702
- CWA Local #7707
- CWA Local #7708
- CWA Local #7750
- CWA Local #7774
- CWA Local #7777
- CWA Local #7781
- CWA Local #7799
- AFA-CWA Local #27009 United
- AFA-CWA Local #27071 Frontier
- CWA Denver Newspaper Guild Local #37074
- CWA Local #57052
- CWA Local #57411/NABET Local #411
- CWA Local #87020
International Alliance of Theatrical Stage Employees
- IATSE Local #7
- IATSE Local #62
- IATSE Local #229
- IATSE Local #719
International Association of Fire Fighters
- Colorado Professional Fire Fighters (CPFF)
International Association of Heat and Frost Insulators and Allied Workers
- Heat & Frost Insulators and Allied Workers Local #28
International Association of Machinists and Aerospace Workers
- IAMAW Local #47
- IAM Local #1886
International Brotherhood of Boilermakers
- Boilermakers Local #101
International Brotherhood of Electrical Workers
- IBEW Local #12
- IBEW Local #68
- IBEW Local #111
- IBEW Local #113
- IBEW Local #667
- IBEW Local #708
- IBEW Local #1269
- IBEW Local #1759
- IBEW Local #2159
International Brotherhood of Teamsters
- Brotherhood of Locomotive Engineers & Trainmen Colorado State Legislative Board (BLET)
- Teamsters Local #455
International Union of Bricklayers and Allied Craftworkers
- IUBAC Local #7
International Union of Elevator Constructors
- IUEC Local #25
International Union of Operating Engineers
- IUOE Local #1
- IUOE Local #9
International Union of Painters and Allied Trades
- IUPAT Local #79
- IUPAT Local #419
- IUPAT Local #930
International Union of Police Associations
- IUPA Local #303
International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers (IW)
- IW Local #24
- IW Local #847
Laborers' International Union of North America (LIUNA)
- Laborers’ Local #720
National Association of Letter Carriers (NALC)
- NALC Local #47
- NALC Local #204
- NALC Local #229
- NALC Local #642
- NALC Local #4405
- NALC Local #1517
- NALC Local #5996
National Nurses United
- California Nurses Association
National Postal Mail Handlers Union
- CO Mail Handlers Local #321
NFL Players Association
Office and Professional Employees International Union
- OPEIU Local #2
- OPEIU Local #29
- OPEIU Local #30
- OPEIU Local #39
- OPEIU Local #108
- OPEIU Local #109
- OPEIU Local #174
- OPEIU Local #277
- OPEIU Local #322
- OPEIU Local #472
- OPEIU Local #1010
- OPEIU Local #4873
Operative Plasterers' and Cement Masons' International Association
- OPCMIA Local #577
Professional Aviation Safety Specialists
Screen Actions Guild and the American Federation of Television and Radio Artists
- SAG-AFTRA Colorado Local
Service Employees International Union
- SEIU Local #105
- Chicago & Midwest Regional Joint Board (CMRJB)
Sheet Metal, Air, Rail & Transportation
- SMART SMW Local #9
- SMART TD Colorado State Legislative Board
Transport Workers Union of America
- TWU Local #555
- TWU Local #556
United Association
- UA Local #3
- UA Local #58
- UA Local #145
- UA Local #208
- UA Local #669
Unite Here
- Unite Here Local #23
United Steelworkers
- USW Local #12-477
- USW Local #12-920
- USW Local #2102
- USW Local #3267
- USW Local #14482
United Union of Roofers, Waterproofers, and Allied Workers
- Roofers Local #58