2003–2005
Jorge Ungo , Acting Administrator
Martine Dougé, Acting Assistant Administrator
2005–2007
Rafael Rivera, Administrator
Anja Lodge, Assistant Administrator 2005–2006
Patricia Yacovone, Acting Assistant Administrator 2006–2007
2007–2009
Mary Esther Diaz, Administrator
Patricia Thickstun, Assistant Administrator
2009–2011
Patricia Thickstun, Administrator
Suzanne M. Couture, Assistant Administrator
2011–2013
Madalena Sánchez Zampaulo, Administrator
Antonio E. Guerra , Assistant Administrator
2013–2015
Madalena Sánchez Zampaulo, Administrator
Antonio E. Guerra, Assistant Administrator
2015–2017
Marisa Gillio, Administrator
Tricia Perry, Assistant Administrator
2017–2019
Marisa Gillio, Administrator
Flávia Lima, Assistant Administrator 2017–2018
Yasha A. Saebi, Acting Assistant Administrator 2018–2019
2019–2021
Yasha A. Saebi, Administrator
Andreea I. Boscor, Assistant Administrator
2021–2023
Yasha Saebi, Administrator
María Paula Plazas, Assistant Administrator