Union City may refer to:
Places in the United States
- Union City, California
- Union City, Connecticut
- Union City, Georgia
- Union City, Indiana
- Union City Commercial Historic District
- Union City in Madison County, Kentucky
- Union City, Michigan
- Union City, Montana, a ghost town
- Union City, New Jersey
- Union City, Ohio
- Union City, Oklahoma
- Union City, Pennsylvania
- Union City Historic District
- Union City, Tennessee
Other
- Union City (film), a 1980 American film
- Union City, a fictional town in the video game Urban Chaos
- Union City Recordings, a record label
- , a cargo ship launched in 1909 as SS Iserlohn