A procedure is described for the growth of large single crystals of gallium phosphide. A vertical Bridgman apparatus is employed with a controlled phosphorus pressure source to maintain stoichiometric conditions during freezing. The high phosphorus pressure is contained by the use of heavy‐walled quartz in the low temperature zone, and by permitting the thin‐walled quartz in the hot zone to soften and expand out against a graphite support tube. Crystals doped with both zinc and tellurium have been prepared. The electrical properties of these and “undoped” crystals are presented.