Timothy T. Lockwood (1810–1870) was Mayor of the City of Buffalo, New York, serving 1858–1859.

He returned to Buffalo around 1842 and became a member of the Erie County Medical Society.

In 1851, Lockwood was appointed city health physician under Mayor James Wadsworth.

He was married to Charlotte of Hamburg, New York; she died and he re-married on October 25, 1869, this time to Louise C.

On December 23, 1870, he died in Utica, New York, and was buried between the bodies of both his wives in Forest Lawn Cemetery.