O'Brien James G.
O'Byrne Philip
O'Farrell S.
O'Keefe Thomas
O'Murchadha Niall
O'Neill E. S. D.
O'Reilly Rachel
O'Shea E. M.
Obermair Gustav M.
Oberski J.
Obousy Richard K.
Observatory Rome Astronomical
Obukhov Valery V.
Odon P. I.
Odorizzi Stefano
Odrzygozdz Zdzislaw
Oelker E.
of Jerusalem Hebrew University
of Mathematics Yakov Itin (Institute
of Technology Jerusalem College