Oppy may refer to: the nickname of Opportunity (rover), a Mars rover that landed on the planet Mars in 2004 a nickname for J. Robert Oppenheimer (most often spelled "Oppie"), the Manhattan Project leader the nickname of Hubert Opperman, Australian cyclist and politician Oppy, Pas-de-Calais, a commune of the Pas-de-Calais département, in northern France Shortened form of optimist (dinghy) Professor and author Graham Oppy, born 1960 in Australia