Family name Gillock (Gillock 
) , throughout the world, is a rare last name. The family name Gillock is characteristic of the United States, where it is a rare surname, Germany, where it is an extremely rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Gillock | Canada, Germany, United States |
| william gillock American composer, US (b. 1917) |
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| edgar gillock American politician, US (b. 1928) |
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