Surname Ritossa (Ritossa 
) , around the globe, is a rare cognomen. The cognomen Ritossa is characteristic of Croatia, where it is a rare surname, Italy, and Argentina. In absolute terms, this name is the most popular in Italy, Argentina, and Australia. Much less frequently, Ritossa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ritossa | Italy, Australia, Croatia, United States, Argentina |
| ferruccio ritossa Italian geneticist (1936–2014) (b. 1936) |
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| david ritossa Australian cricketer, AU (b. 1971) |
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| claudio ritossa Ph.D. Università di Bologna 1994, IT |
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| ferruccio ritossa molecular biologist |
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Mr, Pedro, Denis, Dario, Diego, Laura, Lidia, Lucia, James, Jaime, Jorge, Tammy, Norma, Nella, Ennio, Irene, Marina, Marino, Monica, Melisa, Miriam, Sandra, Peter, Petra, Paola, Pablo, Ms, Ana, Aldo, Rita, Luca, Joel, Jess, Juan, Elda, Eric, Sharon, Hugo, Maria, Mario, Marco, Mirta, Silvo, Serge, Swann, Anita, Carlo, Kelly, Ivan, and Silvia