Frank Bailey (5 January 1865 - 26 August 1953) was a Brooklyn-based financier and philanthropist.
He was married to Marie Louise Eastman.
They maintained a city residence in Brooklyn, and a country residence in Locust Valley (near Lattingtown on Long Island), which they purchased in 1911 and jokingly named 'Munnysunk'.
The estate became the 42-acre (17 ha) Bailey Arboretum.