An election to Dublin Corporation took place in January 1920 as part of that year's Irish local elections. 80 councillors were elected from 5 electoral divisions by PR-STV voting for a five-year term of office. Sinn Féin won a slight majority in the council, with 42 seats. Whilst the Sinn Féin majority was small, they emerged from the election as by far the largest party on the Dublin Corporation council.