Worldwide, Tumaini (Tumaini 
) is a common gender-neutral forename. The first name Tumaini is characteristic of Tanzania, where it is a common gender-neutral name, and the United States, where it is an extremely rare epicene name. Very seldom, Tumaini is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Tumaini | Rwanda, Uganda, Democratic Republic of the Congo, Kenya, Tanzania |
| tumaini bryceson magessa Tanzanian politician, TZ (b. 1964) |
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| tumaini r coker researcher |
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| tumaini s mkwizu researcher |
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| tumaini steede British association football player (1990-2012), GB (b. 1990) |
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Swai, Chaula, Kimaro, Kibona, Kyando, Daniel, Laizer, Lazaro, Joseph, Julius, Tarimo, Edward, Wilson, Yohana, Zakayo, Mahenge, Massawe, Michael, Charles, Richard, Jackson, William, Samwel, Mbilinyi, Samson, Elias, Paul, Lema, John, Juma, Urio, Mosha, Moshi, Minja, Mushi, Mrema, Mbise, Sanga, Simon, Kaaya, Paulo, Petro, Peter, David, Daudi, Lyimo, Ngowi, Mollel, and Emmanuel