First Street

First Street or 1st Street may refer to:


 * First Street (Hong Kong)
 * 1st Street (Los Angeles)
 * Anyang 1st Street
 * First Street station (disambiguation), train stations of the name
 * First Street, a store brand operated by the Smart & Final grocery chain
 * First Street, Singapore, a road in Siglap
 * Mercer Street (Manhattan), formerly called by that name
 * First Street Foundation, a nonprofit organization based in Brooklyn, NY that is dedicated to making climate risk information accessible and useful for individuals, businesses and governments.