Cognomen Loosli (Loosli 
, وسلي 
) , in all the world, is quite a rare family name. The last name Loosli is habitual in Switzerland, where it is quite a common surname, Eswatini, where it is quite a rare surname, and Chile, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Switzerland, the United States, and Eswatini. Much less frequently, Loosli is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Loosli | Switzerland, Eswatini, France, United States, Germany |
| وسلي | Iran |
|
carl albert loosli Swiss writer (1877-1959), CH (b. 1877) |
|
|
arthur loosli Swiss concert singer and painter (1926-2021), CH (b. 1926) |
|
| walter loosli Swiss coxswain, CH (b. 1901) |
|
|
| paul werner loosli CH (b. 1895) |
|
|
| john k. loosli (b. 1909) |
|
|
| peter w. loosli stage actor (1919-2011) (b. 1919) |
|
|
| theo loosli Swiss conductor and choir director, CH (b. 1924) |
|
|
|
david loosli road bicycle racer, CH (b. 1980) |
|
| walter loosli Swiss sculptor and stained-glass artist (1932-2015), CH (b. 1932) |
|
|
|
sylvain loosli French poker player, FR (b. 1986) |
|
|
noah loosli association football player, CH (b. 1997) |
|
| hansueli loosli Swiss business executive, CH (b. 1955) |
|
|
| peter loosli cyclist, CH (b. 1958) |
|
|
| ruth loosli Swiss author, CH (b. 1959) |
|
|
| martin loosli CH (b. 1956) |
|