Family name Gilleland (Gilleland 
) , globally, is quite a rare surname. The last name Gilleland is habitual in the United States, where it is a rare surname, Australia, and New Zealand. Not in comparison with a country's population, it is commonest in the United States, Australia, and the United Kingdom.
| VARIANT | COUNTRY |
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| Gilleland | Canada, New Zealand, Australia, United States, United Kingdom |
| terry r. gilleland, jr. American politician, US (b. 1977) |
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| eric gilleland Ph.D. Colorado State University 2004 |
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| eric gilleland researcher |
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| jonathan gilleland researcher (ORCID 0000-0001-7538-2881) |
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| braden gilleland researcher |
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