'''Posidonius''' ([[Bahasa Yunani|GreekYunani]]: Ποσειδώνιος, ''Poseidonios'', artinya "dari [[Poseidon]]") "darudari [[Apamea (Syria)|Apameia]]" (ὁ Ἀπαμεύς) atau "dari [[Rhodes]]" (ὁ Ῥόδιος) (hidup pada 135 SM – 51 M), adalah seorang filsuf Stoa, astronom, sejarawan, biograph, dan guru Sejarah Syria berkebangsaan Yunani<ref name=Sarton>{{cite journal| authorlink= George Sarton | last= Sarton |first= George |year= 1936 |title= The Unity and Diversity of the Mediterranean World |journal= Osiris |volume= 2| pages= 406–463 [430]}}</ref><ref>[http://www.britannica.com/eb/article-9061021/Poseidonius "Poseidonius"], ''[[Encyclopædia Britannica]]''</ref><ref name=Britannica>[http://www.1911encyclopedia.org/Posidonius "Posidonius"], ''[[Encyclopædia Britannica Eleventh Edition]]'', 1911</ref><ref name="MagillAves1998">{{cite book|last1=Magill|first1=Frank Northen|last2=Aves|first2=Alison|title=Dictionary of World Biography|url=http://books.google.com/books?id=wyKaVFZqbdUC|accessdate=28 May 2013|year=1998|publisher=Taylor & Francis|isbn=9781579580407|pages=904–910}}</ref><ref name="Edelstein">{{en}}Ludwig edelstein., The Encyclopedia of Phylosophy Volume 3 and 4, New York: Macmillan Publishing Co., 1967, Hal. 413-414 </ref>
