Bieler is a surname. Notable people with the surname include:
Alfred Bieler (1923–2013), ice hockey player for the Swiss national team
André Charles Biéler (1896–1989), Swiss-born Canadian painter and teacher.
Bruno Bieler (1888–1966), German general who commanded the LII Corps during World War II
Christoph Bieler (born 1977), athlete from Austria competing in Nordic combined
Claudio Bieler (born 1984), Argentine-born Ecuadorian footballer
Ernest Biéler (1863–1948), Swiss painter
Franco Bieler (born 1950), Italian former alpine skier
Fritz Bieler (1895–1957), Mexican aviator
Gustave Bieler DSO MBE (1904–1944), Special Operations Executive agent during World War II
Helmut Bieler (born 1940), German composer and pianist
Henry G. Bieler (1893–1975), American physician, wrote the book Food is Your Best Medicine
Ida Bieler (born in Virginia) is an American violinist and professor of Violin
Jason Bieler, singer, guitarist and songwriter with hard rock band Saigon Kick
Klaus-Dieter Bieler (born 1949), German athlete
Pascal Bieler (born 1986), German football player
Wanda Bieler (born 1959), Italian former alpine skier
