Delco may refer to:
Places
- Delaware County, Pennsylvania
- Delaware County, Ohio
- Delaware County, Iowa
- Delta County, Colorado
- Delta County, Michigan
- Delco, North Carolina
Companies
Media
- Delco Proper, television show
Linguistics
- Delco accent, a form of the Philadelphia or Delaware Valley accent, named for Delware County.
People with the surname
- Wilhelmina Ruth Delco (born 1929), American politician