The L. Tom Perry Special Collections (1957- ) is a subset of the Harold B. Lee Library at Brigham Young University.

Founded in 1957, Special Collections at BYU began with 1,000 books, 50 manuscript collections, and one curator. Today the department has 14 full-time curators and manuscript processors assisted by 30 students working with 300,000 books, 9,000 manuscript collections, and nearly 3/4 million photographs. In 1999, the Department of Special Collections & Manuscripts took the name L. Tom Perry Special Collections and moved into newly designed facilities on the first floor (second lower level) of the Harold B. Lee Library. Aline and L. Sam Skaggs, through their ALSAM Foundation, made a generous financial donation to the new library and requested that the Special Collections be named after L. Tom Perry, an apostle of The Church of Jesus Christ of Latter-day Saints. The department is responsible for collecting, preserving, and making available rare books, historical manuscripts, and university records. Department chairs have included Scott Duvall (1999-2002), P. Bradford Westwood (2002-2009), and Russ Taylor (2009- ).