Pipeclay

Pipeclay may refer to:


 * White pipe clay, white-firing clay of the sort that is used to fashion smoking pipes
 * Pipeclay triangle, a piece of laboratory equipment, typically made from this material
 * Catlinite or Pipestone, found in Sioux Quartzite deposits in the upper midwestern and southwestern United States, that is used to fashion smoking pipes
 * Pipeclay National Park in Australia