Tri-Cities

Tri-Cities most often refers to:

Tri-City, Tricity or Tri-Cities may also refer to:

Populated places

Tri-Cities (British Columbia), consisting of Coquitlam, Port Coquitlam, and Port Moody, located in the north-eastern section of Metro Vancouver
Tri-Cities (Ontario), consisting of Kitchener, Cambridge, and Waterloo

In California:
- Tri-Cities in Los Angeles County, California, refers to the Burbank, Glendale, and Pasadena area, particularly in the local real estate industry.
- Tri-City, San Diego County, California, Oceanside, Vista, and Carlsbad
- Tri-City area in the San Francisco Bay Area refers to the three neighboring cities Fremont, Newark, and Union City.
Tri-Cities, Georgia, consisting of College Park, East Point, and Hapeville, all of which are near Hartsfield–Jackson Atlanta International Airport
Tri-Cities, Illinois, in Kane County, Illinois, the county seat of Geneva and the nearby cities of Batavia, and St. Charles,
In Michigan:
- Tri-Cities, Michigan, consisting of Bay City, Saginaw, and Midland in the Saginaw Valley
- Tri-Cities, used locally to refer to Grand Haven, Spring Lake, and Ferrysburg in West Michigan
Tri-Cities, Nebraska in the south-central part of the state, Grand Island, Kearney, and Hastings

Tri-Cities, New Hampshire Rochester, Dover and Somersworth

Tri-Cities, New Mexico, Farmington, Bloomfield, and Aztec
In New York:
- Capital District, New York, consisting of Albany, Schenectady, and Troy
- Triple Cities, Binghamton, Endicott and Johnson City
In North Carolina:
- Piedmont Triad in North Carolina, consisting of Greensboro, Winston-Salem, and High Point.
- Research Triangle in North Carolina, consisting of Raleigh, Durham, and Chapel Hill.
Tri-Cities, Oklahoma, Tuttle, Newcastle, and Blanchard
Tri-City, Oregon, a census-designated place (CDP) and unincorporated community in Douglas County, Oregon, United States, named for 3 cities: Myrtle Creek, Canyonville and Riddle.
Lehigh Valley in Pennsylvania: Allentown, Bethlehem, and Easton
Tri-Cities, Tennessee, Tennessee and Virginia, consisting of the three cities of Bristol, Kingsport, and Johnson City
Golden Triangle (Texas) consisting of Beaumont, Port Arthur, and Orange.
In Virginia:
- Historic Triangle, three historic colonial communities on the Virginia Peninsula, namely Jamestown, Williamsburg, and Yorktown
- Tri-Cities, Virginia, consisting of Petersburg, Colonial Heights, and Hopewell in the Greater Richmond Region
Tri-Cities, Washington, consisting of Richland, Pasco, and Kennewick, Washington
- Tri-Cities metropolitan area, metropolitan area centered on Tri-Cities, Washington

Dammam metropolitan area, consisting of Dhahran, Dammam and Khobar in Saudi Arabia

Triangle Region (Denmark) – Kolding, Vejle and Frederica (Danish: trekantsområde)

Trollhättan, Uddevalla and Vänersborg are called Tri-city (Swedish: Trestad) as a combination

Tri-Cities Blackhawks, former name of the Atlanta Hawks from 1946 to 1951
Tri-City Americans, an ice hockey team in Kennewick, Washington.
Tri-City Dust Devils, a minor league baseball team in Pasco, Washington, United States.
Tri-City ValleyCats, a minor league baseball team in Troy, New York