Zephaniah is both a given name and surname. Notable people with the name include:
Zephaniah Webster Bunce (1787–1889), American businessmanZephaniah Kingsley Sr. (1734–1792), British merchantZephaniah Kingsley (1765–1843), American planterZephaniah Alexander Looby (1899–1972), American lawyerZephaniah Swift Moore (1770–1823), American Congregational clergymanZephaniah Ncube (born 1957), Zimbabwean long-distance runnerZephaniah Platt (1735–1807), American politicianZephaniah Platt (Michigan Attorney General) (1796–1871), American politicianZephaniah Skinner (born 1989), Australian rules footballerZephaniah Swift (1759–1823), American authorZephaniah Thomas (born 1989), English footballerZephaniah Turner, Jr. (1812–1876), American politicianZephaniah Williams (1795–1874), Welsh ChartistBenjamin Zephaniah (born 1958), British Jamaican writerJohn Zephaniah Bell (1794–1883), Scottish artistJohn Zephaniah Holwell (1711–1798), British surgeonDewi Zephaniah Phillips (1934–2006), Welsh philosopherCharles Zephaniah Platt (1773–1822), American politician