Surname ישכר (Yissachar 
, Isachar 
, ישכר ) , worldwide, is a rare cognomen. The cognomen ישכר is characteristic of Israel, where it is quite a rare surname, Greece, where it is a very rare surname, and Mexico. In absolute terms, it is commonest in Israel, Mexico, and Nigeria. Also, ישכר is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yissachar | United Kingdom, United States, Israel, Venezuela |
| Isachar | Philippines, United States, Israel, Mexico, Nigeria |
| ישכר | Israel |
| Yisachar | United States |