Last name Sedlag (Sedlag 
) , throughout the world, is a rare cognomen. The cognomen Sedlag is habitual in Germany, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sedlag | Germany, United States |
| anastazy sedlag German priest (1786-1856), PL (b. 1786) |
|
|
| ulrich sedlag German entomologist, author and zoologist, DE (b. 1923) |
|