USS Pioneer

USS Pioneer may refer to:


 * USS Pioneer (1836), a nineteenth-century barque.
 * USS Pioneer (1862), may refer to a scuttled Confederate States Navy submarine raised by Union troops or may refer to the Bayou St. John submarine which was for decades misidentified as the Pioneer.
 * USS Pioneer (MSF-105), a World War II minesweeper commissioned in 1942 and sold to Mexico in 1973 as Leandro Valle
 * USS Pioneer (MCM-9), is an Avenger-class mine countermeasures ship currently in service.