Cognomen Soudain (Soudain 
) , across the world, is a rare family name. The cognomen Soudain is habitual in Western Europe, particularly France, where it is a rare surname, Belgium, where it is a very rare surname, and Netherlands. Measured by absolute frequency, the name is most common in France, the United Kingdom, and Netherlands. Much less frequently, Soudain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soudain | United Kingdom, Germany, Netherlands, Belgium, France |
| alexandre marie soudain French engraver and architectural engraver, born 1833 (b. 1833) |
|
|
| barry soudain Baker, janitor and allegedly victim Spontaneous Human Combustion (1943-1987), GB (b. 1943) |
|
Mr, Helen, Marion, Martin, Marlon, Marsha, Moïse, Sylvie, Alexis, Arnaud, Claire, Cyndel, Pascal, Romain, Didier, Gerard, Joseph, Thomas, Elodie, Emilie, France, Franck, Nikko, Julie, James, Lucas, Ms, Ju, Sã, Tim, Maud, Mike, Beth, Paul, Rene, Eric, Werner, Emma, Fred, Yves, Yvan, Marie, Manon, Sarah, Azouz, Roger, Denis, David, Hugo, and Quincy