Bielz
₠ ° Bielz is the surname of the following people:
- Michael Bielz (1787–1866), Transylvanian, k. k. Austrian lithographer, publisher and malacologist, father of Eduard A. Bielz
- Eduard Albert Bielz (1828–1898), Transylvanian, k. k. and k. u. k. Austrian lawyer and natural scientist, son of Michael Bielz
- Julius Bielz (1884–1958), Transylvanian, k. u. k. Austrian, later Romanian art historian, folklorist and museologist