Mito HollyHock is a Japanese professional football (soccer) club located in Mito, Ibaraki Prefecture. The team currently playing in the J2 League, Japanese second tier of professional football.

Mito is the capital city of Ibaraki Prefecture, in the northern Kantō region of Japan. As of 1 January 2024, the city had an estimated population of 268,036 in 126,055 households and a population density of 1,233 persons per km2. The percentage of the population aged over 65 was 27.1%. The total area of the city is 217.32 square kilometres (83.91 sq mi).