Nigh is a surname. Notable people with the surname include:
Donna Nigh (born 1933), First Lady of Oklahoma, wife of George George Nigh (1927–2025), Governor of Oklahoma Jane Nigh (1925–1993), American actress Ronald Nigh (born 1947), American ecological anthropologist William Nigh (1881–1955), American film director, writer, and actor William Nigh (politician) (1920–2008), American politician
See also Nye (disambiguation)