- For the Zealot leader during the First Jewish-Roman War with a similar name, see Eleazar ben Simon.
Eleazar b. Simeon (or Eleazar ben Simeon or R. Eleazar son of R. Simeon; Hebrew: אלעזר ברבי שמעון, lit. Eleazar beRabbi[son of Rabbi] Shimon, or רבי אלעזר בן שמעון , lit. Rabbi Eleazar ben [son of] Shimon) was a Jewish Tanna sage of the fifth generation, contemporary of R. Judah haNasi. He is also the son of R. Shimon bar Yochai. During his youth he was wanted by the Roman government, but later on worked on behalf of the Roman government as a security and public order commissioner. There are various legendary stories concerning his unusual physical size. Towards the end of his life he chose to be tormented by pain. The traditional stories concerning his death are shrouded in various legendaries.