Zadok or Zadok HaKohen, also spelled Ṣadok, Ṣadoc, Zadoq, Tzadok or Tsadoq, was a Kohen (priest), biblically recorded to be a descendant from Eleazar the son of Aaron. He was the High Priest of Israel during the reigns of David and Solomon. He aided King David during the revolt of his son Absalom, was subsequently instrumental in bringing Solomon to the throne and officiated at Solomon's coronation. After Solomon's building of the First Temple in Jerusalem, Zadok was the first High Priest to serve there.

Eleazar or Elazar was a priest in the Hebrew Bible, the second High Priest, succeeding his father Aaron after he died. He was a nephew of Moses.