Brenan is a surname and a given name. Notable people with the name include:
Surname Gerald Brenan (1894–1987), British writer and Hispanist James Brenan (1837–1907), Irish artist Ryan Brenan (1798–1868), Australian politician from New South Wales John Brenan (physician) (1768?- 1830), Irish physician John Patrick Micklethwait Brenan (1917–1985), British botanist Joseph Brenan (1828–1857), Irish writer and nationalist Michael John Brenan (1780–1847), Irish Roman Catholic priest and historian
Given name Brenan (author) () Brenan Espartinez, Filipino singer Brenan Cruse, American singer
See also Brennan (given name) Brennan (surname)