Cognomen Rosaia (Rosaia 
) , throughout the world, is a rare last name. The cognomen Rosaia is characteristic of Italy, where it is a rare surname, Australia, and the United States, where it is a very rare surname. Much less frequently, Rosaia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosaia | Australia, Italy, United States, India, France |
| roberto lucio rosaia Italian physician and politician (1924-1999), IT (b. 1924) |
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Roy, Deana, David, Daisy, Diana, Lynne, Jacob, Jamie, Julie, Elena, Frank, Wayne, Albert, Chiara, Robert, Ronald, Rhonda, Denise, Dennis, Daniel, Dianna, Joseph, Derek, Renzo, Ralph, Patti, Lee, Marc, Mary, Anne, Carl, Cece, Kaye, Dala, Gail, Geri, Joanne, Lynn, Josh, Toni, Tina, Emma, Marta, Sarah, Chris, Bruno, Bruna, Ketty, Jake, and Nadine