Surname Mgaya (Mgaya 
) , in the world, is a common last name. The last name Mgaya is habitual in Tanzania, where it is quite a common surname, Kenya, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Mgaya is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Mgaya | Tanzania, Kenya, Italy, United States, United Kingdom |
| andrew h mgaya researcher |
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| edward mgaya reseacher in New Zealand |
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| neema william mgaya Tanzanian politician, TZ (b. 1980) |
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| yunus daud mgaya researcher, TZ |
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| emmanuel mgaya Tanzanian television presenter, TZ (b. 1985) |
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| josephine mgaya |
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| hans mgaya |
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Yi, Ayub, Ahad, Beth, Best, Boaz, Kile, Paul, Rose, Roja, Rozi, Ruth, Daud, Dora, Gift, Lawi, Leah, Lily, Luca, Lucy, Luka, Lulu, Aita, Aida, Asia, Asha, Atu, Deo, Eda, Eva, Mary, Mery, Mebo, Mika, Musa, Sara, Jane, Said, Alex, Ally, Alfa, Anna, Anno, Aron, Abel, Amon, Amos, Adam, Suzy, and John