Eugene Houdry, French-American mechanical engineer and inventor (d. 1962)
Eugène Jules Houdry (Domont, France, April 18, 1892 – Upper Darby, Pennsylvania, July 18, 1962) was a mechanical engineer who graduated from École Nationale Supérieure d'Arts et Métiers in 1911.

Houdry served as a lieutenant in a tank company in the French Army during World War One, receiving the French Legion of Honour.

He invented catalytic cracking of petroleum feed stocks, for which he

received the Perkin Medal among others.