Individual Members

Professional scientists whose research is directly relevant to some branch of astronomy are eligible to apply as Individual Members. Individual Members are, normally, admitted by the Executive Committee on the proposal of a National Member.

Individual Members listed in the IAU Directory have a valid, public email, and are affiliated to at least one Division. They are labeled as "Active Members". For corrections and updates, please contact Any members remaining Inactive for more than 3 years will be removed from the IAU lists.

For combined Individual and Junior Members click here

For the Working Rules pertaining to Individual membership click here.

Additionally, while only Active Members are listed in the IAU Directory, you may still search for Active, Inactive or Deceased Members in the search field to your right.

For gender statistics click here.

Total number of IAU Individual members: 11545.  Number of Active Individual Members in the IAU Directory: 11197.


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Name▼ Location NCA adherence
Osorio, Mayra Spain Spain
Ossendrijver, Mathieu Germany Germany
Osten, Rachel A. United States United States
Østensen, Roy H. Norway Norway
Östlin, Göran T. Sweden Sweden
Ostorero, Luisa Italy Italy
Ostriker, Eve C. United States United States
Ostriker, Jeremiah P. United States United States
Ostrowski, Michał Poland Poland
O'Sullivan, Créidhe Ireland Ireland
O'Sullivan, Ewan United States United States
O'Sullivan, Shane P Australia Australia
O'Sullivan, Stephen Ireland Ireland
Oswalt, Terry D. United States United States
Oszkiewicz, Dagmara Anna Poland Poland
OTA, Naomi Japan Japan
Otarola, Angel Chile United States
Othman, Mazlan Malaysia Malaysia
O'Toole, Simon J. Australia Australia
OTSUKA, Masaaki Japan China, Taipei
OTSUKI, Kaori Japan Japan
Ott, Juergen A. United States United States
OUCHI , Masami Japan Japan
Oudmaijer, Rene United Kingdom United Kingdom
Ouellette, Nathalie Nguyen-Quoc Canada Canada
Ovcharov, Evgeni Petev Bulgaria Bulgaria
Overzier, Roderik A. Netherlands Netherlands
Owen, Frazer Nelson United States United States
Owen, John Michael United States United States
Owens, Mathew J United Kingdom United Kingdom
Owers, Matthew S Australia Australia
Owis, Ashraf H Egypt Egypt
Owocki, Stanley Peter United States United States
OYA, Shin United States United States
OYABU, Shinki Japan Japan
OZAKI, Masanobu Japan Japan
Ozbey Arabaci, Mehtap United Kingdom Turkey
OZDEMIR, Sacit Turkey Turkey
OZEKI , Hiroyuki Japan Japan
Özel, Mehmet Emin Turkey Turkey
Ozguc, Atila Turkey Turkey
Özışık, Tuncay Turkey Turkey
Ozkan, Mustafa Turker Turkey Turkey
OZKARDES, Burcu Turkey Turkey
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