Ben is frequently used as a shortened version of the given name Benjamin (as well as Benedict, Bengt, Bennett, Benoit, Benvolio, or Ebenezer, among other names).
Ben (in Hebrew:בֶּן, Son of) forms part of surnames, e.g. Abraham ben Abraham (Hebrew:אברהם בן אברהם). Bar-, "son of" in Aramaic, is also seen, e.g. Simon bar Kokhba (Hebrew:שמעון בר כוכבא). The Arabic "Bin" (بن) or "Ibn" (ابن), also meaning "son of" is an obvious cognate.