Ernest Weiss

Ernest Weiss may refer to:


 * Ernest Weiss (sailor) (1926–1985), Canadian sailor
 * Ernest David Weiss (1902–1982), naturalised British Jewish transport economist and Soviet espionage agent
 * Ernst Weiss (1882–1940), Austrian physician and author
 * Ernst August Weiß (1900–1942), or Weiss, German mathematician