| Cerulo, Pierluigi | The build-up of the red sequence in high redshift galaxy clusters | 2015 | Swinburne University of Technology | GMOS-N | Australia |
| Castanheira, Barbara Garcia | Sismologia das estrelas ZZ Ceti | 2007 | Federal University of Rio Grande do Sul | GMOS-N | Brazil |
| Caso, Juan Pablo | Estudio de enanas ultra-compactas y cumulos globulares en el cumulo de Antlia | 2015 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Caruana, Joseph | Spectroscopic analysis of primeval galaxy candidates | 2013 | University of Oxford | GNIRS | UK |
| Caris, Evelyn Elizabeth | Size and velocity dispersion evolution of red and dead galaxies | 2013 | Swinburne University of Technology | GMOS-N | Australia |
| Cao, Yi | Cosmic explosions: observations of infant hydrogen-free supernovae towards an understanding of their parent systems | 2016 | California Institute of Technology | GMOS-N | USA |
| Cano, Zach | The nature of gamma ray burst supernovae | 2011 | Liverpool John Moores University | GMOS-N/GMOS-S | UK |
| Caminha, Gabriel Bartosch | Um Prelúdio Para o Levantamento Gravitacional Forte em Levantamentos de Grandes Áreas | 2013 | Centro Brasileiro de Pesquisas Fisicas | | Brazil |
| Calderon, Juan Pablo | Estudio de propiedades fotometricas de galaxias en el cumulo de Antlia | 2015 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Caballero-nieves, Saida | A tale of two telescopes: Taking a closer look at the multiplicity properties of massive stars in Cygnus | 2012 | Georgia State University | NIRI+ALTAIR | USA |
| Bussmann, Robert Shane | The nature of dust-obscured galaxies at z~2 | 2010 | University of Arizona | NIRI | USA |
| Bursick, Shelly K. | Two multicolor surveys for quasars at redshifts greater than 4.5 | 2009 | University of Arkansas | GMOS-S | USA |
| Bowler, Brendan Peter | Direct imaging search for planets around low-mass stars and spectroscopic characterization of young exoplanets | 2013 | University of Hawaii | NIFS+ALTAIR | USA |
| Bott, Kimberly M. | Polarimetry of hot-Jupiter systems and radiative transfer models of planetary atmospheres | 2017 | University of New South Wales | GNIRS | Australia |
| Bosman, Sarah Elena Ivana | Quasars at the high redshift frontier | 2017 | University of Cambridge | GMOS-S | UK |
| Boris, Natalia Veronica | Busca de Estruturas em Grandes Escalas em Altos Redshifts Estudo Fotometrico de Quatro Campos contendo Pares de Quasares em z~1 | 2006 | University of Sao Paulo | GMOS-N/GMOS-S | Brazil |
| Bordalo, Vinícius | Internal Kinematics and The L-sigma Relation of the HII Galaxies | 2009 | Observatorio Nacional | GMOS-N | Brazil |
| Bonanos, Alceste Zoe | Determining accurate distances to nearby galaxies | 2005 | Harvard University | GMOS-N | USA |
| Bolton, Adam S. | Constraints on early-type galaxy structure from sepctroscopically selected gravitaitonal lenses | 2005 | Massachusetts Institute of Technology | GMOS-N | USA |
| Blake, Cullen H. | Ultracool dwarfs and their companions | 2009 | Harvard University | PHOENIX | USA |
