Fort Vancouver Regional Libraries (FVRL) is a public library system in southwestern Washington state. It serves a four-county area centered around the city of Vancouver, where the system is headquartered. FVRL has 15 library branches, two bookmobiles, and online services for its 147,000 patrons. The service area includes Clark, Klickitat, and Skamania counties, and portions of Cowlitz County.

The library district was established in 1950 as the first inter-county rural library district in Washington. The collection for the district includes 705,000 items, including books and eBooks, magazines and eMagazines, DVDs, audio book CDs and eAudio, and streaming video.

The Fort Vancouver Regional Libraries system has 15 branches and two bookmobiles that serve an area of 4,200 square miles (11,000 km²) across four counties in Southwest Washington. Its service area includes all of Clark County except for Camas, all of Klickitat County, all of Skamania County, and two areas in Cowlitz County: the city of Woodland and the independent Yale Valley Library District. As of 2023^[update], FVRL has over 147,000 active patrons and an annual circulation of 5.4 million for its 705,000 items, which include physical and digital materials. Its libraries have a combined footprint of 190,507 square feet (17,698.7 m²) and an estimated 1.3 million annual visits.

The library district is governed by a board of trustees with seven members who are each appointed by local governments to seven-year terms. The Clark County Council appoints three members, while the Vancouver City Council appoints two members and county commissions of Klickitat and Skamania counties each appoint one member. The appointments are confirmed by the three full county members of the district.

The earliest recorded circulating library in Southwest Washington was the Hudson's Bay Company Library, which began as early as 1833. Records indicate that the library was located in Fort Vancouver, and provided service to officers of the Hudson's Bay Company. The service ended in 1843.

The Vancouver Catholic Library Association was established between the years of 1865 and 1870, and in 1872 was reported to maintain a collection of 1,000 volumes. The library was closed in 1886, and the collection was dispersed.

The Vancouver Library Association was formed on January 11, 1877. An initial collection of 27 books was gathered and housed in the same building as the Vancouver Independent, the local newspaper of the period. In 1878, the Good Templar Lodge disbanded and donated its collection of books and furniture to the Odd Fellows Lodge, for the purpose of setting up a free reading room. In December 1878, the Vancouver Library Association moved its small collection of books from the offices of the Independent to the newly established Free Reading Room.

By 1891, the library had changed locations several times and was in danger of being closed due to lack of funds. A petition was put before the city council to establish a tax-supported public library, and on April 4 of that year the request was granted. This tax supported library came to be called the Vancouver Public Library.