Jefferson Parish Library (JPL) is the library system of Jefferson Parish, Louisiana. It has its headquarters in the East Bank Regional Library in Metairie, an unincorporated area in the parish.

Jefferson Parish is a parish in the U.S. state of Louisiana. As of the 2020 census, the population was 440,781. Its parish seat is Gretna, its largest community is Metairie, and its largest incorporated city is Kenner. Jefferson Parish is included in the Greater New Orleans area.