Family name Mtoi (Mtoi 
) , globally, is quite a rare surname. The cognomen Mtoi is habitual in Tanzania, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Mtoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mtoi | South Africa, Malaysia, United States, Tanzania, India |
Tom, Monika, Mbwana, Salehe, Samwel, Bakari, Prisca, Rehema, Dorice, George, Lilian, Janeth, Joseph, Halima, Faraji, Fikiri, Yohana, Mohamed, Michael, Msafiri, Clement, Paulina, Monica, Mariam, Uziel, Irene, Ally, Aniu, Adam, Rose, Gogi, Luca, Lucy, John, Manka, Mlekwa, Raymond, Saidi, Grace, Lydia, James, Neema, Ester, Edwin, Enock, Hilda, Frank, Isaac, Peter, and Raphael