Bretz may refer to:
Bretz (surname) Bretz, Preston County, West Virginia, an unincorporated community in Preston County, West Virginia Bretz, Tucker County, West Virginia, an unincorporated community in Tucker County, West Virginia Old Bretz Mill, California, an unincorporated community in Fresno County J. Harlen, Bretz, an American geologist, best known for his research that led to the acceptance of the Missoula Floods.