Cognomen Thagard (Thagard 
) , globally, is a rare last name. The surname Thagard is habitual in the United States, where it is a rare surname, Canada, and New Zealand. Very seldom, Thagard is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thagard | Canada, Brazil, Israel, New Zealand, United States |
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norman thagard United States Marine Corps officer, aviator and astronaut, US (b. 1943) |
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| paul thagard Canadian philosopher, CA (b. 1950) |
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| andrew s thagard researcher |
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| selma mededovic thagard researcher (ORCID 0000-0002-6371-4751) |
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