Pierre Martin Remi Aucher-Éloy (October 2, 1792 – October 6, 1838) was a French pharmacist and botanist who was a native of Blois.
He received his education at Orléans and later Paris. Beginning in 1817, he operated a bookstore in Blois, and in 1820, also a print shop. In 1826 he returned to Paris as owner of a print shop. In 1830 he relocated to Istanbul with aims of creating an Herbier d'Orient. For the next several years he collected and studied plants throughout Asia Minor, Cyprus, Greece, Egypt, the Sinai Peninsula, Chios, Kos, Syria, Persia, Oman, et al. Stricken by exhaustion and illness, he died near Isfahan on October 6, 1838.
Aucher sold his collections to the Museum National d'Histoire Naturelle in Paris, from where they were distributed to various herbaria. His book Relations de Voyages en Orient de 1830 à 1838 was published posthumously in 1843.