Eliezer ben Hurcanus or Eliezer ben Hyrcanus (the surname coming from the father's Hellenized name) (Hebrew: אליעזר בן הורקנוס), a Kohen, was one of the most prominent tannaim of the 1st and 2nd centuries, disciple of R. Johanan ben Zakkai and colleague of Gamaliel II, whose sister he married (see Imma Shalom), and of Joshua ben Hananiah. He is the sixth most frequently mentioned sage in the Mishnah.
Read more about Eliezer Ben Hurcanus: Introduction To Torah, Eliezer's Conservatism, Charge of Heresy, Censured, His Death