Richard Alan "Rick" Mastracchio (born February 11, 1960) is an American engineer and former NASA astronaut.
He has flown on three NASA Space Shuttle missions as a mission specialist in addition to serving as a Flight Engineer on the Soyuz TMA-11M (Expedition 38/Expedition 39) long duration mission aboard the International Space Station.
He is currently the Senior Director of Operations for Commercial Resupply Services at Orbital ATK.