- From Holland, from old Dutch “raet,” meaning advice
- Famous for the character Rhett Butler from the Margaret Mitchell novel and 1940 movie “Gone with the Wind”
- Some suggest the name could also have Welsh origins, as a variation of Rhys
- Rhett first joined the top 1000 names in 1955 (ranking 842), and as of 2017, had reached the #180 spot with its popularity growing steadily since 2007