Gustave Zédé (1825–1891) was a French naval engineer and pioneering designer of submarines.

After studying at the École Polytechnique in November 1843 he qualified in 1845 as a marine engineer and went to work at the Brest Naval Dockyard.

By 1863 he was chief engineer in charge of shipbuilding under the direction of Henri Dupuy de Lôme, and under his leadership Zédé helped design and build Gymnote, the first practicable submarine, which was launched in 1880.

In 1880 he started planning the construction of Sirène, a larger version of Gymnote and France's (and one of the world's) earliest commissioned naval submarines.

Gustave Zédé died on 26 April 1891, from an explosion that occurred while he was testing the propulsion system for a new torpedo.