Abishai may refer to:
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Abishai (biblical figure), the eldest son of Zeruiah, King David's sister
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Abishai, a Semitic chief who offered gifts to the Lord of Beni-Hasan according to an inscription in Middle Egypt.
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Abishai (''Dungeons & Dragons''), a type of monster in ''Dungeons & Dragons''
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Avishai (given name) Avishai or Avishay ( he, אבישי) is a Jewish given name and surname taken from the Biblical figure Abishai (biblical figure), Abishai. Notable people with the name include:
Given name
*Avishai Abrahami, founder of wix.com
* (born 1968), Israe ...
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