- Reu or Ragau in Genesis was the son of Peleg and the father of Serug, thus being Abraham's great-great-grandfather.
He was 32 when Serug was born and lived to the age of 239 (Genesis 11:20), according to the Masoretic text. The Septuagint and Samaritan Pentateuch state that his age on fathering Serug was 132, and the Septuagint thus gives age at death as 339.
- Genesis 11:20 When Reu had lived 32 years, he became the father of Serug.
- Genesis 11:18 When Peleg had lived 30 years, he became the father of Reu.