Globally, Castant (Castant 
) is a rare female given name. The forename Castant is characteristic of Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare girly name. More frequently, Castant is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Castant | Mexico, United States, India, France, Democratic Republic of the Congo |
Mr, Jerome, Jeanne, Franck, Odette, Oceane, Cynthia, Bernard, Patrick, Raymond, Gherdha, Laurent, Liliane, Ludovic, Thierry, Fabrice, Olivier, Matthias, Stephane, Corentin, Benjamin, Blandine, Didier, Daniel, Renald, Robert, Ms, Marc, Enzo, Herv, Maria, Marie, Manon, Swann, Alain, Boris, Patricia, Roger, Tiimy, Nadia, Oliva, Marius, Maxime, Sydney, Audrey, Carole, Benoit, Pierre, Julie, and Philippe