Last name Masaitis (Masaitis 
) , all over the world, is a rare family name. The surname Masaitis is habitual in Northern Europe, particularly Lithuania, where it is quite a common surname, Latvia, where it is a rare surname, and Estonia. Measured by absolute frequency, it is commonest in Lithuania, the United States, and Latvia.
| VARIANT | COUNTRY |
|---|---|
| Masaitis | Denmark, Lithuania, United Kingdom, United States, Latvia |
| česlovas masaitis Lithuanian mathematician, LT (b. 1912) |
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| albinas jonas masaitis LT (b. 1936) |
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Mr, Eric, Emma, Maria, Marie, Miles, Mindy, Susan, Sofia, Staci, Toni, Scott, Angel, Angie, Anita, Aidas, Aaron, Chris, Carol, Craig, Benny, Aldas, Juli, Joan, John, Amy, Ben, Kim, Kã, Jay, Tom, Mary, Mark, Matt, Mike, Alan, Anna, Adam, Cole, Bill, Kara, Kady, Paul, Phil, Gary, Lisa, Betty, and Karen