Across the world, Riegler (Riegler 
) is a very rare unisex forename. The first name Riegler is habitual in Austria, where it is a rare boy's name, and Italy, where it is a very rare epicene name. Much more frequently, Riegler is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Riegler | United States, Germany, Italy, Austria, Hungary |
| lorenz riegler (1815-1862), AT (b. 1815) |
|