McElwee is a surname. Notable people with the surname include:
Andrew McElwee (died 1968), British trade unionist and politician Bob McElwee (born 1935), American football official Carol McElwee, American politician Enid McElwee (1914–2001), New Zealand fencer George McElwee (1879–?), Australian politician Joshua J. McElwee, American journalist Lee McElwee (1894–1957), American baseball player Rob McElwee (born 1961), English weather forecaster Ross McElwee (born 1947), American documentary filmmaker Samuel A. McElwee (1857–1914), American slave and lawyer Thomas McElwee (1957–1981), Irish Republican Army member William McElwee Miller (1892–1993), American missionary
See also Lisa McElwee-White, American chemist