Weier is a surname. Notable people with the surname include:
Armin Weier (born 1956), German wrestler John Weier (born 1949), Canadian poet Kelsey Weier (born 1991), American television personality and beauty queen Lindsey Weier (born 1984), American cross-country skier Lloyd Weier (1938-2003), Australian rugby player Michael Weier (born 1997), Australian football player Paul Weier (born 1934), Swiss equestrian