The Japanese name that means smile is "Emi," which is written with two kanji characters meaning "beautiful smile." In Japanese culture, smiling is considered essential, and having a name that means smile is auspicious. The popularity of the name Emi has been high for many years, and it can be used for both boys and girls. Names hold significant cultural importance in Japan, and parents often choose a suitable name based on its meaning and cultural significance. Other popular Japanese names with unique meanings include Yui, Sora, Miyu, and Sakura.