Tri-City United High School is a public school located in Montgomery, Minnesota, United States.

The school serves the communities of Montgomery, Lonsdale, and Le Center, Minnesota for grades 9–12.

[5] The Tri-City United High School, as it exists today, was built and founded in 2012 following the consolidation of the Le Center and Montgomery-Lonsdale school districts.

[1] The current high school building was built on the site of a former Montgomery elementary school to better accommodate the larger student body with academic and athletic opportunities not previously available to either consolidated schools campuses.

[6] The current Tri-City United Titans varsity team arose from the merger of The Le Center Wildcats and Montgomery-Lonsdale Redbirds varsity teams.