Bryn Mawr College Deanery, Academic residence at Bryn Mawr College, United States.

The Bryn Mawr College Deanery began as a five-room Victorian cottage about 100 metres west of Taylor Hall and grew into a forty-six-room mansion. Its interior was decorated with the help of Lockwood de Forest, whose Blue Room is often ranked with Whistler's Peacock Room as an American Aesthetic Movement interior. Louis Comfort Tiffany supplied Tiffany glass light fixtures, and John Charles Olmsted designed the adjacent garden.

The building served as the residence of Martha Carey Thomas from 1885 to 1933, who was the first Dean and second President of Bryn Mawr College. After her tenure, it later functioned as the Alumnae House until 1968, when it was removed to make way for Canaday Library.

The Deanery's 'Blue Room', designed by Lockwood de Forest, is often cited as one of the best American examples of an Aesthetic Movement interior, comparable to James Abbott McNeill Whistler's Peacock Room. Louis Comfort Tiffany, de Forest's partner in Tiffany & de Forest, supplied light fixtures of Tiffany glass for the house. Thomas and Mary Garrett filled the rooms with objects gathered on their travels, among them a pair of stone dogs from a Mandarin's palace in Manchuria and inlaid tables from Damascus.

The building was located in a central spot on the college campus and served as a residential structure. Visitors should note that the original structure no longer stands, as it was demolished in 1968 for another campus project.

The Deanery's interiors were decorated with objects M. Carey Thomas and Mary Garrett collected on their travels, among them a pair of stone dogs from a Mandarin's palace in Manchuria and inlaid tables from Damascus. Many furnishings were moved to Wyndham, an 18th-century farmhouse, when the building was demolished in 1968.