Surname Ducao (Ducao 
) , around the world, is a rare cognomen. The cognomen Ducao is habitual in Philippines, where it is a rare surname, Malaysia, where it is an extremely rare surname, and France. Not in comparison with a country's population, it most frequently occurs in Philippines, the United States, and France.
Ayn, April, Aelen, Chinh, Carol, Pedro, Ramel, Rodel, Danny, Donna, Gilda, Glenn, Lanie, Larry, Lylin, Jervy, Jelly, Julma, Juana, Nieva, Neilo, Nenet, Aikar, Agnes, Amado, Arnel, Eva, Ian, Mark, Alex, Alan, Amon, Blas, Ruby, Liza, John, Elmer, Jean, Judy, Jill, Nash, Neil, Eric, Icho, Myrna, Salis, Sinon, Almie, June, and Edgar