Family name Lyett (Lyett 
) , all around the world, is an extremely rare cognomen. The family name Lyett is habitual in Latin America and the Caribbean, particularly Venezuela, where it is an extremely rare surname. More prevalently, Lyett is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lyett | South Africa, Philippines, United States, Brazil, Venezuela |