Columbia-Tusculum is one of the 52 neighborhoods of Cincinnati, Ohio. Founded in 1788 and annexed in 1871, it is the city's oldest neighborhood. The population was 1,523 at the 2020 census.

Columbia Township is one of the twelve townships of Hamilton County, Ohio, United States. The 2020 census found 4,446 people in the township. Originally one of Ohio's largest townships by area at its inception in 1791, it gradually shrank to one of the smallest by the early 1950s.