Philipp Jakob Sachs[1](26 August 1627, Breslau- 7 January 1672, Breslau) was a German physician, naturalist, and editor of Ephemerides Academiae naturae curiosorum, the first ever learned journal in the field of medicine and natural history. He was a state physician in Breslau, and one of the founders of the Academia Naturae Curiosorum (Leopoldina).
His works include the 1665 Gammarologia, on crabs.