Dilley may refer to:
;Places in the United States
- Dilley, Oregon, an unincorporated community
- Dilley, Texas, a city
- Dilley Independent School District
- Dilley High School
- Dilleys Mill, West Virginia
- Dilley House, a historic house in Pine Bluff, Arkansas
- MacMillan-Dilley House, a historic house in Pine Bluff, Arkansas
;Other
- Dilley (surname)
- Billy Dilley's Super-Duper Subterranean Summer, an American animated TV series