The Herzog August Library (Herzog August Bibliothek) is a renowned research library located in Wolfenbüttel, Germany. Founded in the 17th century by Duke August the Younger, it houses an extensive collection of manuscripts, rare books, and historical documents, making it a significant center for scholarly research. The library is particularly known for its rich holdings in literature, history, and theology. It attracts researchers and scholars from around the world who come to study its unique collections, which include works from the Renaissance and Reformation periods. The library also hosts various exhibitions and events to promote its resources.