School District 18 may refer to, among other things:
United States Wells-Ogunquit Community School District 18, in Maine Garden City Union Free School District 18, in New York Plainedge Union Free School District, in New York Blue Ridge Community Unit School District 18, in Illinois Fairmount School District 18, in Wyoming Apache County School District No. 18, in Arizona Cochise County School District No. 18, in Arizona Greenlee County School District No. 18, in Arizona
Canada Black Gold Regional Division No. 18, in Alberta New Brunswick School District 18 School District 18 Golden, in British Columbia