Pierre Guillemin was a French rugby union player.

He was 1 m 88 tall and weighed 81 kg. He played loosehead prop (occasionally tighthead as well) for . His clubs were Racing club de France, and also SCUF.

An architect by profession, he became a lieutenant in the French infantry, and died on the front in the First World War after a reconnaissance mission in Bois le Prêtre.

Past

• 11 caps for France, from 1908–1911, with four official matches in the Five Nations Championship from 1908-1909.
• Runner-up in the Top 14 in 1912