Every year there are several scholarly Bible conferences held around the world. Many -if not most-of these are arranged by some scholarly organisations. Some conferences are focusing on Old Testament issues, some on New Testament, and others then, on various other fields of study like the Pseudepigrapha, Qumran etc. etc. As far as I know there is only one such conference that has had a postage stamp issued in its honor, and that is the 1980 conference of the International Organization for the Study of the Old Testament (IOSOT), held in Vienna, Austria in 1980.
See more on this here.