Streiff is a surname. Notable people with the surname include: Christian Streiff (born 1954), businessman. Daniel Streiff, Swiss curler, European champion. Patrick Streiff (born 1955), bishop. Philippe Streiff (born 1955), racing driver. Rösli Streiff (1901–1997), skier. Streiff (horse) the horse of Gustavus Adolphus at the battle of Lützen 1632. See also. Hallermann-Streiff syndrome https://en.wikipedia.org/wiki/Streiff