Beith is a Scottish surname. Notable people with the name include: Sir Alan Beith (born 1943), British politician Alexander Beith (1799–1891), Scottish divine and author Gilbert Beith (1827–1904), Scottish merchant and politician Jackie Beith (1893–1961), Australian rugby union player Sir John Beith (1914–2000), British diplomat Major-General John Hay Beith (1876–1952), British schoolmaster, soldier and writer using the name Ian Hay Robert Beith (1843–1922), Canadian politician