Stillman Chase (b. 1932) is the Systems Engineer for the OTES instrument on OSIRIS-REx Asteroid Sample Return Mission. He was an instrument Co-Investigator on Mariners 2, 6, 7, 9 and 10, Vikings 1 & 2, Pioneers 10 & 11 and Mars Global Surveyor. Chase was an instrument Principal Investigator on Mariner 10.