Last name รุด (Rut 
, Ruud 
, Rūta 
) , around the globe, is a common cognomen. The surname รุด is habitual in Israel, where it is a common surname, Norway, and Iceland, where it is quite a common surname. Not in comparison with a country's population, the name is most common in Israel, Norway, and Mexico. More frequently, รุด is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rut | Norway, India, Israel, Netherlands, Indonesia |
| Ruud | Norway, United States, Mexico, Netherlands, Indonesia |
| Rūta | Sweden, Spain, Lithuania, Belgium, Netherlands |
| รุด | Thailand |
จาโคบัส, สินคง, เข็มกลัด, วงษ์ลา, กุลกรม, พรมรัตน์, ประจิตต์, ศรีโนนโคตร, อินทร์สืบวงศ์, and จันทร์ทิพย์