Maulsby may refer to:
People Surname Israel D. Maulsby (1781–1839), American politician from Maryland Ruhl Maulsby (1923–1996), American politician from Iowa William P. Maulsby (1815–1894), American politician and judge from Maryland
Given name Maulsby Willett Blackman (1876–1943), American entomologist
Places Maulsby, Missouri, unincorporated community in the United States