Harristown may refer to:
Australia Harristown, Queensland, a suburb of Toowoomba
Ireland Harristown, Naas South, County Kildare Harristown (Parliament of Ireland constituency), disestablished 1801 Harristown (civil parish), West Offaly, County Kildare (in King's County until 1840)
United States Harristown, Illinois, village in Macon County Harristown Township, Macon County, Illinois Harristown, Indiana