Cognomen Duic (Duic 
) , in all the world, is a rare surname. The surname Duic is habitual in Slovenia, where it is quite a rare surname, Croatia, where it is a rare surname, and France. Measured by absolute frequency, it is the most numerous in France, Germany, and Argentina.
Mr, Marko, Mirko, Susan, Steve, Anita, Petra, Peter, Petar, Diane, Marta, Goran, Josie, Tyler, Neven, Henri, Vesna, Fanny, Frank, Ivana, Marija, Jasna, Mario, Marie, Maria, Ana, Kim, Dan, Guy, Tom, Marc, Ante, Paul, Dean, Dora, Leon, Luka, Jose, John, Joel, Jean, Tomo, Nada, Ivan, Igor, Yves, Sophie, and Sofija