Coit Tower is a 210-foot (64 m) tower in the Telegraph Hill neighborhood of San Francisco, California, offering panoramic views over the city and the bay. The tower, in the city's Pioneer Park, was built between 1932 and 1933 using Lillie Hitchcock Coit's bequest to beautify the city of San Francisco. It was added to the National Register of Historic Places on January 29, 2008.

The art deco tower, built of unpainted reinforced concrete, was designed by architects Arthur Brown, Jr. and Henry Howard. The interior features fresco murals in the American Social Realism style, painted by 25 different on-site artists and their numerous assistants, plus two additional paintings installed after creation off-site.

Also known as the Coit Memorial Tower, it was dedicated to the volunteer firemen who had died in San Francisco's five major fires. Although an apocryphal story claims that the tower was designed to resemble a fire hose nozzle due to Coit's affinity with the San Francisco firefighters of the day, the resemblance is coincidental.