Throughout the world, Rajaiah (Rajaiah 
) is a common male first name. The first name Rajaiah is characteristic of Bahrain, where it is quite a rare masculine name, India, and Oman. In absolute terms, it most frequently occurs in India, Saudi Arabia, and United Arab Emirates. Very seldom, Rajaiah is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Rajaiah | United Arab Emirates, Oman, Bahrain, India, Saudi Arabia |
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kapu rajaiah Indian painter (1925-2012), IN (b. 1925) |
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siricilla rajaiah Indian politician, IN (b. 1953) |
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| malyala rajaiah Indian politician, IN (b. 1944) |
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| rajaiah tankari Indian businessperson (born 1949, child of Bhagaiah Tankari), IN (b. 1949) |
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| sunnam rajaiah Indian politician (1960-2020), IN (b. 1960) |
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| gurram rajaiah researcher |
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| rajaiah paramasivan researcher |
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Kota, Kadari, Ravula, Dasari, Durgam, Gaddam, Vemula, Mandala, Malyala, Myakala, Chakali, Bandari, Bathula, Kummari, Pallapu, Pittala, Gajjela, Jakkula, Nerella, Velpula, Manupati, Kolipaka, Challa, Racharla, Aakula, Merugu, Puli, Gade, Jadi, Manda, Adepu, Akula, Bandi, Boddu, Boini, Burra, Konda, Kommu, Palle, Rangu, Ganta, Gattu, Gunti, Thota, Nakka, Mamidi, Mogili, Mekala, and Choudhary