Family name Jocilyn (Jocilyn 
) , in the world, is a very rare cognomen. The last name Jocilyn is habitual in Philippines, where it is an extremely rare surname, China, and the United States. Much more prevalently, Jocilyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jocilyn | China, South Africa, Spain, Philippines, United States |
May, Delosa, Garcia, Garlan, Grable, Langhe, Norcio, Harris, Hudson, Mendoza, Metcalf, Delaney, Dellava, Daniels, Gammons, Martinez, Colorado, Bongalon, Villamor, Voorhees, Ibeltran, Polanchek, Kannel, Blanco, Cortez, Malana, Pak, Tan, Ong, Zak, Mari, Ross, Roca, Veal, Malan, Smith, Francisco, Adams, Batan, Pablo, Ramos, Layas, Jones, Tully, Tupas, Espos, Oyler, Martin, Carey, and Schumacher