Pipeclay or pipe clay may refer to:
Catlinite or pipestone, found in Sioux Quartzite deposits in the upper midwestern and southwestern United States, that is used to fashion smoking pipes Pipe clay (Australia), also known as white ocre Pipeclay triangle, a piece of laboratory equipment used to support a crucible or other object being heated Pipeclay National Park in Australia White pipe clay, white-firing clay of the sort used to fashion smoking pipes in Europe
See also Clay pipe dating, dating clay tobacco pipes found at archaeological sites to specific time periods