Isau is an uncommon given name of Hebrew origin, meaning 'he will ask'. It is derived from the Hebrew name Isaac, which means 'he will laugh'. The name Isau is often associated with the biblical figure Isaac, who was the son of Abraham and Sarah in the Old Testament. However, it has gained popularity as a distinct name in recent years, particularly among parents looking for unique monikers for their children. Spelling variations of Isau include Isaau and Izaak. As a given name, Isau is considered unisex, although it is more commonly used for boys. Despite its Hebrew roots, the name Isau has been embraced by people of various cultural backgrounds, adding to its unique appeal. In terms of popularity, Isau remains relatively rare, which may contribute to its allure for parents seeking an uncommon yet meaningful name for their child.
"Isaau saw a sudden surge in popularity from 2002 to 2008, with five babies named Isaau born each year. After a decade-long hiatus, the name resurfaced in 2018 with another five occurrences. In total, fifteen newborns have been named Isaau over these three years."