Cognomen Ducar (Ducar 
, Дукар) , around the globe, is a rare family name. The surname Ducar is habitual in Slovakia, where it is quite a rare surname, Romania, where it is a rare surname, and Afghanistan. Not in comparison with a country's population, it is the most numerous in Slovakia, the United States, and Afghanistan. Much less frequently, Ducar is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ducar | Romania, Slovakia, Argentina, Afghanistan, United States |
| tracy ducar Association footballer, US (b. 1973) |
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| dirk ducar DE (b. 1969) |
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| chuck ducar college basketball player (1964–1964) |
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| dallas michelle ducar researcher (ORCID 0000-0002-0630-4019) |
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| chuck ducar college basketball player (1967–1967) Denver |
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| alberto val ducar Spanish politician, ES |
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| matthew d ducar researcher |
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Mr, Jeff, Juan, Jill, Teri, Ivan, Olga, Maria, Mandy, Sandy, Jean, Steve, Allen, Anton, Aimee, Chris, Craig, Cindy, Brian, Karen, Kelly, Scott, Joan, John, Josh, Jo, Ed, Ana, Bob, Rik, Dan, Joe, Eva, Mary, Mark, Matt, Mitu, Sara, Said, Sean, Anna, Rich, Ryan, Dave, Dirk, Lois, Kevin, and Peter