The Pioneer Library System (PLS) is a public library system that serves residents in the central Oklahoma counties of Cleveland, Pottawatomie and McClain with administrative offices in Norman.

[3] Additionally, the system also allows those served by the Metropolitan Library System (Oklahoma County) to check out materials via a reciprocal borrowing agreement, and also allows non-residents to borrow materials if they pay an annual fee.

[4] The cities of Moore, Norman and Shawnee are served by Redbox-style automated DVD kiosks.

The location at the Irving Recreation Center in Norman is the first such machine in North America to allow customers 24-hour access to library materials.

[5][6] Information about the system's administrative offices and branch libraries is shown below.