Deignan

Deignan is a surname that could refer to:
 * Elizabeth Mary "Lizzie" Deignan (born 1988), English cyclist
 * Herbert Girton Deignan (1906-1968), American ornithologist
 * Kathleen P. Deignan (born 1947), Irish-American theologian, author and singer
 * Martina Deignan (late 20th c.), American actress
 * Osborn Deignan (1873-1915), American navy sailor and Warrant Officer)
 * Philip Deignan (born 1983), Irish cyclist
 * Simon Deignan (1922–2006), Gaelic football player