The Fredericksburg Memorial Library, also known as the Pioneer Memorial Library or the Old Courthouse, is located at 115 W. Main Street, Fredericksburg, Gillespie County, in the U.S. state of Texas. Designed by Alfred Giles, it was built in 1882 to replace the original 1855 courthouse, and was later superseded by the current 1939 courthouse designed by Edward Stein. The first floor houses the Pioneer Memorial Library, while the second floor functions as community hall.