The Flamingo-on-the-Lake Apartments, also known as the Flamingo Apartment Hotel, is a building designed by architect William C. Reichert and located at 5500-5520 S. Shore Drive along Lake Michigan in the Hyde Park neighborhood of Chicago, Illinois. The 16-story apartment building was built with 144 apartments and 16 hotel rooms in 1927; it also featured an outdoor pool and bathhouse. It was designed in the Classical Revival style; its exterior is red brick with terra cotta ornamentation and a dentillated cornice. It and the adjacent building, The Promontory Apartments, a co-op building designed by Mies van der Rohe, are the furthest east buildings in Hyde Park. The building was added to the National Register of Historic Places on May 14, 1986.