Family name Lãng Tử (Lãng Tử 
) , worldwide, is a very rare last name. The last name Lãng Tử is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare surname. Likewise, Lãng Tử is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lãng Tử | Vietnam |