The name Tu is of Vietnamese origin, meaning 'autumn'. It is derived from the Vietnamese word for the season, 'tú'. In Vietnamese culture, autumn is a time of harvest and abundance, which makes this name symbolic of prosperity and richness. The name Tu is typically given to boys but can also be used as a unisex name. It consists of two letters, making it short and simple yet distinct.
The name Tu experienced a surge of popularity from 1982 to 1984, with 33 births during these years combined. The peak year was 1990 with 13 births. However, the name's usage has significantly declined since then, averaging around five births per year from 1997 onwards.