Across the world, Mary Caroline (Mary Caroline 
) is a rare feminine first name. The first name Mary Caroline is habitual in Philippines, where it is a rare girly name, and the United States, where it is an extremely rare girly name.
| VARIANT | COUNTRY |
|---|---|
| Mary Caroline | Philippines, United Kingdom, Mexico, Malaysia, United States |
Lu, Pelayo, Rogers, Revelo, Dungog, Garcia, Lagman, Jojuico, Narada, Valdoz, Vargas, Ocampo, Yorong, Ubaldo, Shreves, Siriban, Arabejo, Rosales, Estigoy, Realista, Maglasang, Melgarejo, Parker, Bayona, Cowden, Azores, Lao, Lim, Tan, Anis, Bell, Kemp, Reed, Owen, Mutya, Adams, Ochavillo, Boter, David, Digal, Lethe, Norba, Hiott, Maners, Mapalo, Miller, Armero, Austin, Perez, and Cabanganan