Family name ولو (Wollo 
, ولو 
, Vallow 
) , in the world, is quite a rare cognomen. The surname ولو is habitual in Syria, where it is quite a rare surname, Benin, and Lebanon, where it is a rare surname. Measured by absolute frequency, the name is most common in Syria, Ethiopia, and Saudi Arabia. Much less frequently, ولو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wollo | Ethiopia, Saudi Arabia, United States, Cameroon, Democratic Republic of the Congo |
| ولو | Saudi Arabia, Iran, Syria, Sudan, Iraq |
| Vallow | Canada, United Kingdom, United States, Australia |