Last name Deo (Deo 
, Déo 
, Deodate 
) , all over the world, is a common surname. The cognomen Deo is characteristic of Fiji, where it is a common surname, New Zealand, where it is quite a common surname, and Nepal (explore the name in all countries). Measured by absolute frequency, this name is the most popular in India, Nepal, and Tanzania. Also, Deo is the forename as well as the last name.
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| Deo | Indonesia, India, Democratic Republic of the Congo, Uganda, Tanzania |
| Déo | Togo, Rwanda, Democratic Republic of the Congo, Benin, Burundi |
| Deodate | Democratic Republic of the Congo, Philippines, Brazil, United States, South Africa |
| johannes de deo 13th-century Portuguese priest, judge and scholar of canon law who taught at the University of Bologna, PT (b. 1189) |
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shankarrao srikrushna deo IN (b. 1871) |
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| udai pratap nath shah deo (b. 1866) |
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| rudra pratap deo IN (b. 1885) |
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| h. h. raja mahipal singh ju deo, 7th raja of sarila (1898-1983) (b. 1898) |
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| ashish deo Indian film director, IN (b. 1901) |
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t. s. singh deo Indian politician, IN (b. 1952) |
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| pratap chandra bhanj deo IN (b. 1901) |
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ajinkya deo Indian actor, IN (b. 1963) |
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| prafulla chandra bhanja deo (b. 1909) |
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jagdeep singh deo Malaysian politician, MY (b. 1971) |
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| sankar narayan singh deo Indian politician, IN (b. 1922) |
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gobind singh deo Malaysian politician and lawyer, MY (b. 1973) |
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| aravinda ramachandra deo Indian diplomat, IN (b. 1924) |
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| josephine del deo American preservationist (b. 1925) |
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