Blach
Blach is the family name of the following people:
- Arne Blach (1900–1977), Danish hockey player
- Ejvind Blach (1895–1972), Danish hockey player
- Erich Blach (1907–1979), German writer
- Günter Blach (1928–2011), German manufacturer of x-ray equipment
- Helena Blach Lavrsen (* 1963), Danish curler
- Karl Blach (1929–1976), Austrian mountaineer
- Preben Blach (* 1920), Danish hockey player
- Svend Blach (1893–1979), Danish hockey player
- Thomas Blach (* 1953), German inventor
- Wiesław Błach (* 1962), Polish judoka