Delaware Nurses Association
- Affiliated with the American Nurses Association.
- http://www.denurses.org/

Local 42 Union Insulators
- The International Association of Heat and Frost Insulators and Asbestos Workers located in Wilmington, Delaware.
- http://www.local42.org/

Diamond State Telephone Commercial Union
- Represents employees of Verizon Delaware Inc. and Verizon Services Corp.
- http://www.cwalocal13100.com/

AFSCME Local 3911 Emergency Services
- New Castle County Delaware Paramedics and Emergency Communications
- http://www.3911.org/

Local 21 American Federation of Musicians
- Located in Wilmington, DE, representing all of Delaware as well as several counties in PA and MD.
- http://www.afm.org/21/

Delaware State Education Association
- Union representing public education employees. State unit of the National Education Association
- http://www.dsea.org/

IBEW Local 313
- Delaware local of the electrician's union.
- http://ibew313.org/

Delaware Valley Health Care Coalition
- Association of union benefit funds created for the purpose of providing quality products at significant market discounts.
- http://www.dvhcc.com