Cognomen Ланцетти (Lancetti 
, Ланцетти 
) , globally, is a rare surname. The last name Ланцетти is habitual in Italy, where it is a rare surname, Argentina, and Switzerland. Not in comparison with a country's population, the name is most common in Italy, Argentina, and Brazil. Very seldom, Ланцетти is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lancetti | Italy, Switzerland, Argentina, France, Brazil |
| Ланцетти | Russia |