Bryan Lathrop (August 6, 1844 – May 13, 1916) was an American businessman and art collector from Alexandria, Virginia, United States.

He was grandson of Daniel Bryan[2] Lathrop attended the Dinwiddie School, intending to enroll at the University of Virginia.

However, with the outbreak of the American Civil War, Lathrop moved with his pro-Union family to Chicago, Illinois, home of his uncle, Thomas Barbour Bryan.

His younger brother was Barbour Lathrop, world traveler and patron of plant explorer David Grandison Fairchild.

Lathrop was also an avid collector of art and had one of the largest collections of James Abbott McNeill Whistler in the country.

[6] Edgar Lee Masters wrote a commemorative poem about Lathrop in Poetry magazine in honor of his support of music in Chicago.