Adolphe Hélière (10 March 1891 – 14 July 1910) was a French cyclist that died during the 1910 Tour de France.
He died on a rest day during the 1910 Tour de France when he was reportedly stung by a jellyfish, although his cause of death is disputed.While three men have died during the actual race, Hélière is often listed in the four total deaths.