Cognomen Roundtree (Roundtree 
) , around the globe, is quite a common family name. The cognomen Roundtree is habitual in the United States, where it is quite a rare surname, Ireland, where it is a rare surname, and New Zealand. Measured by absolute frequency, it most frequently occurs in the United States, Japan, and Canada.
| VARIANT | COUNTRY |
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| Roundtree | Japan, Canada, United Kingdom, United States, Ireland |
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richard roundtree American actor, US (b. 1942) |
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| red roundtree American musician (1905-1990), US (b. 1905) |
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margaret roundtree American basketball player (1988-), US (b. 1988) |
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| raleigh roundtree American football player, US (b. 1975) |
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| saudia roundtree American basketball player-coach, US (b. 1976) |
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| shay roundtree American actor, US (b. 1977) |
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| j.b. roundtree architect |
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| mike roundtree college basketball player (1978–1978) Austin Peay |
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| billy roundtree college basketball player (1983–1986) Missouri |
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| steven roundtree college basketball player (2011–2013) Oral Roberts |
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| troy roundtree college basketball player (2004–2007) Delaware State |
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| torres roundtree college basketball player (2009–2009) Southern Illinois |
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| james roundtree college basketball player (1972–1975) Delaware State |
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| robert roundtree college basketball player (1977–1978) Missouri |
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| vinnie roundtree college basketball player (1972–1974) Rutgers |
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