List of Famous people born on May 3rd

Jean Vincent Félix Lamouroux was a French biologist and naturalist, noted for his seminal work with algae.

Louise "Lou" Marie Loeber was a Dutch painter.

Johnny Aitken was an American racecar driver from Indianapolis, who was active in the years prior to World War I. Aitken competed in the Indianapolis 500 three times. He started the race twice, in 1911 and 1916. He led the first lap of the first race (1911). Aitken captured the pole position in 1916, but ended up in 15th place that year. In the 1915 Indianapolis 500, Aitken drove relief for two drivers, Gil Anderson and Earl Cooper.

Zlil Sela is an Israeli mathematician working in the area of geometric group theory. He is a Professor of Mathematics at the Hebrew University of Jerusalem. Sela is known for the solution of the isomorphism problem for torsion-free word-hyperbolic groups and for the solution of the Tarski conjecture about equivalence of first-order theories of finitely generated non-abelian free groups.

Cesare Brambilla was an Italian racing cyclist. He won the 1906 edition of the Giro di Lombardia.