Omar (Hebrew: אוֹמָר, meaning "eloquent" or "gifted speaker") was a Hebrew man mentioned in the Bible. He was the ancestor of an Edomite clan, and specifically he was the son of Eliphaz (Esau's eldest son). Omar's brothers were Teman, Zepho, Gatam, Kenaz and Amalek and Toney.
Esau and his wife Adah (daughter of Elon the Hittite) were his grandparents. Taking that into account, it is clear that he was a great-grandson of Isaac and a great-great-grandson of Abraham, as well as a descendant of Adam and Eve.
Historically, his name is first mentioned in the Book of Genesis, Chapter 36, verse 11. Nowadays, his name is rarely used by most Jews, but it continues to be a popular name among Temani Jews and is common in many countries.