Tri-Cities
- Blanchard, Oklahoma
- Capital District, New York
- Chandigarh Tricity
- College Park, Georgia
- Dammam metropolitan area
- Dubai-Sharjah-Ajman metropolitan area
- East Point, Georgia
- Electrolux
- Ferrysburg, Michigan
- Fremont, California
- Golden Triangle (Texas)
- Grand Haven, Michigan
- Hapeville, Georgia
- Hartsfield–Jackson Atlanta International Airport
- Historic Triangle
- Kashubian Tricity
- Lehigh Valley
- Newark, California
- Newcastle, Oklahoma
- Noida Ghaziabad Tricity
- Piedmont Triad
- Quad Cities
- Raipur-Bhilai-Durg Tri City Metro area
- Research Triangle
- San Francisco Bay Area
- Spring Lake, Michigan
- Tri-Cities (British Columbia)
- Tri-Cities (Ontario)
- Tri-Cities metropolitan area
- Tri-Cities, Georgia
- Tri-Cities, Illinois
- Tri-Cities, Michigan
- Tri-Cities, Nebraska
- Tri-Cities, Oklahoma
- Tri-Cities, Tennessee
- Tri-Cities, Virginia
- Tri-Cities, Washington
- Tri-City Americans
- Tri-City Dust Devils
- Tri-City News
- Tri-City ValleyCats
- Tri-City, Oregon
- Tri-City, San Diego County, California
- Tricity, Nepal
- Tricity, Poland
- Triple Cities
- Tripoli (disambiguation)
- Trollhättan
- Tuttle, Oklahoma
- Twin cities
- Twin city (disambiguation)
- Uddevalla
- Union City, California
- Vänersborg
- Warangal Tri-City
- West Yorkshire Urban Area
- Yamaha Tricity
