Edmond Coignet
Born	4 July 1856 Ville d'Avray, France
Died	1915 Paris
Nationality	French
Alma mater	École Centrale Paris
Occupation	French entrepreneur

Edmond Coignet (4 July 1856 – 1915) was a French engineer and entrepreneur. He has been instrumental in the theory of reinforced concrete.

Coignet was the son of industrialist François Coignet (1814–1888) and educated at the École Centrale des Arts et Manufactures (École Centrale Paris). He was the inventor of the agglomerated concrete to strengthen the cement with metal inserts. He permanently reoriented the family business to construction. In 1892 he applied his innovative construction methods on the aqueduct of Achères in Paris. Coignet was the first to use reinforced concrete piles and built with the architect Jacques Hermant some of the first Parisian buildings in this material.

• L'art de l'ingénieur, sous la dir. de Antoine Picon, éd. du Moniteur, 600 p. (ISBN 2-85850-911-5)