Surname Castain (Castain 
) , globally, is a rare family name. The family name Castain is habitual in France, where it is a rare surname, the United States, where it is a very rare surname, and Canada. Much less frequently, Castain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Castain | Italy, Spain, United States, Canada, France |
|
josé núñez castain Spanish politician, ES (b. 1950) |
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| aimée castain French painter (1917-2015), FR (b. 1917) |
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| claire castain researcher |
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| david castain American entrepreneur and philanthropist, US (b. 1988) |
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| micaela castain association football player, US (b. 1992) |
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Sam, Kevin, Ralph, Devin, Dever, Devon, Deron, Daren, David, Davon, Laura, Lucas, Heidi, Marcia, Marcus, Morgan, Mervin, Melina, Meagan, Michel, Muriel, Sheree, Karin, Sydney, Betty, Alisa, Tom, Ira, Ida, Mary, Mike, Kari, Kyle, Paul, Ross, Dawn, Levi, John, Eric, Earl, Inga, Maria, Mandy, Meron, Melda, Myles, Shina, Alvin, and Alaric