Satō

, }} is the most common Japanese surname with 2 million people having the surname, representing about 1.5% of Japan's population in March 2023. It is often romanized as Sato, Satou or Satoh.

A 2024 study by Hiroshi Yoshida at Tohoku University estimated that if a law requiring spouses to have the same surname is not repealed and the Japanese people do not go extinct due to population decline, then every person in Japan will have the surname Satō by — legalizing separate surnames for married couples would delay this to . Provided by Wikipedia