Nhat is a Vietnamese given name, meaning "smile". It is often found among individuals of Vietnamese descent living abroad due to the large Vietnamese diaspora. In Vietnam, Nhat is one of the most popular names for both boys and girls, ranking in the top 10 names for each gender. The name Nhat also appears in other Southeast Asian countries with significant Vietnamese populations, such as Cambodia and Laos.
The name Nhat appears to have had periods of popularity with a peak in the mid-90s, but has since become less common.