The Kedermister Library at Langley near Slough in Buckinghamshire is a rare surviving example of an early 17th century parish library, preserved in situ in the decorated cupboards designed for it in 1620 in St Mary's Church. Founded around 1613 by Sir John Kedermister (d. 1631). A catalogue of the Library survives from 1638.

Two of the Library's treasures, the Kedermister Gospels (an 11th century illuminated manuscript) and the "Pharmacopolium or a booke of Medicine" (a manuscript herbal of 1630) are held in the British Library.