Family name Otto-Knapke (Otto-Knapke 
) , all over the world, is an extremely rare cognomen. The cognomen Otto-Knapke is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a first name Otto, and a last name Knapke.
| VARIANT | COUNTRY |
|---|---|
| Otto-Knapke | United States |