Surname Dunagan (Dunagan 
) , all over the world, is quite a rare family name. The family name Dunagan is characteristic of the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname. Not in comparison with a country's population, it is commonest in the United States, Canada, and Philippines.
| VARIANT | COUNTRY |
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| Dunagan | Philippines, United Kingdom, Canada, Italy, United States |
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donnie dunagan actor and United States Marine, US (b. 1934) |
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| deanna dunagan American actress, US (b. 1940) |
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| megan m dunagan researcher |
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| daryl dunagan college basketball player (1970–1972) Eastern Kentucky |
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| john david dunagan Ph.D. Massachusetts Institute of Technology 2002 |
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| pamela b dunagan researcher |
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| sandra dunagan |
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