Family name Isug (Isug 
) , worldwide, is a rare surname. The cognomen Isug is characteristic of Philippines, where it is a rare surname, Nigeria, and the United States, where it is an extremely rare surname.
Leo, Lerna, Linda, Lucio, Janny, Jayno, Jomar, Jomer, Jerry, Junie, Jimmy, Nancy, Nolie, Noime, Eddie, Enaro, Efren, Margie, Marlon, Maylen, Menard, Mylene, Gemma, Germa, Rizal, Ricky, Jun, Een, Raul, Roma, Rudy, Gina, Lita, Jose, Nora, Merla, Sylvia, Mylen, Annie, Anita, Amado, Cedic, Claro, Bella, Belen, Rodel, Roger, Recto, Sally, and Analyn