Does anyone know what Old Testament did Apostles use?

[ScorpioSniper2]

The Apostles that could read and speak Hebrew most likely would have used the Hebrew Tanakh (like Paul for example). The ones who didn't speak Hebrew or read it could have easily made use of the Targums (from memory only, as they weren't written down during the Apostolic period) or the Peshitta Tanakh (if Luke was Assyrian, then it is certain that he was acquainted with this version). Greek-speaking Christians obviously would have used the Septuagint.