Family name בליילוק (Blalock 
, בליילוק 
) , throughout the world, is a common cognomen. The surname בליילוק is characteristic of the United States, where it is quite a rare surname, New Zealand, where it is a rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Blalock | Germany, United Kingdom, United States, Canada, New Zealand |
| בליילוק | Israel |