| Fantin, Nicholas J. | Studying a fire from its ashes: white dwarfs as probes of Milky Way evolution | 2020 | University of Victoria | GMOS-N/GMOS-S | Canada |
| Gharanfoli, Soheila | Studying low-redshift universe through observation of Damped Lyman-alpha quasar absorbers | 2009 | University of South Carolina | Hokupaa | USA |
| Escudero, Carlos Gabriel | Subpoblaciones de cúmulos globulares: claves sobre la formación de galaxias de tipo temprano en grupos y el campo | 2016 | Universidad Nacional de La Plata (UNLP) | GMOS-N/GMOS-S | Argentina |
| Westmoquette, Mark S. | Super star clusters, their environment, and the formation of galactic winds | 2007 | University of London, University College London | GMOS-N | UK |
| Secrest, Nathan J. | Supermassive black holes in bulgeless and dwarf galaxies: a multi-wavelength investigation | 2014 | George Mason University | GMOS-N | USA |
| Silge, Julia Dorothea | Sweep the dust away: infrared kinematics of nearby galaxies | 2005 | The University of Texas at Austin | GNIRS | USA |
| D'Andrea, Christopher Brian | Testing supernova cosmology and progenitor effects with the SDSS-II supernova survey | 2011 | University of Pensylvania | GMOS-S | USA |
| Barrett, Elizabeth | The assembly of massive galaxy clusters: a joint X-ray-optical study | 2006 | University of Hawaii | GMOS-N/GMOS-S | USA |
| Cerulo, Pierluigi | The build-up of the red sequence in high redshift galaxy clusters | 2015 | Swinburne University of Technology | GMOS-N | Australia |
| Longmore, Steven Neil | The cradle of galactic superpowers: studying the natal environment of massive stars | 2007 | University of New South Wales | MICHELLE | Australia |
| Lloyd, James Patrick | The detection and characterization of low mass companions to sun-like stars | 2002 | University of California, Berkeley | Hokupaa | USA |
| Perley, Daniel Alan | The diverse environments of Gamma-ray bursts | 2011 | University of California, Berkeley | GMOS-N/GMOS-S/NIRI | USA |
| Barbosa, Cassio | The environment of massive star birth sites | 2004 | University of Sao Paulo | TRECS | Brazil |
| Oldham, Lindsay Joanna | The evolution of dark and luminous structure in massive early-type galaxies | 2017 | University of Cambridge | GMOS-N/NIFS+LGS | UK |
| Smith, Rachel | The Evolution of Debris Disk Systems: Constraints from Theory and Observation | 2008 | University of Edinburgh | MICHELLE/TRECS | UK |
| Stott, John Philip | The evolution of galaxies in massive clusters | 2007 | Durham University | GMOS-N | UK |
| Danielson, Alice | The Evolution of Massive Star-forming Galaxies: Energetics and the Interstellar Medium | 2014 | Durham University | GNIRS | UK |
| Dahm, Scott E. | The evolution of young clusters | 2005 | University of Hawaii | GMOS-N | USA |
| Norris, Mark Anderson | The formation of early-type galaxies | 2008 | University of Durham | GMOS-N/GMOS-S | UK |
| Navarete, Felipe Donizeti Teston | The Formation of High-Mass Stars: from High-Mass Clumps to Accretion Discs and Molecular Outflows | 2018 | University of Sao Paulo | NIFS+ALTAIR | Brazil |
