Cognomen Senat (Senat 
, Senatus 
, Senato 
) , around the globe, is quite a common surname. The cognomen Senat is habitual in Haiti, where it is quite a common surname, North Macedonia, and the Dominican Republic, where it is quite a rare surname. In absolute terms, it is the most numerous in Haiti, the United States, and France. Very seldom, Senat is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Senat | Dominican Republic, France, Haiti, United States, North Macedonia |
| Senatus | Dominican Republic, Brazil, France, Haiti, United States |
| Senato | Philippines, Brazil, India, Ethiopia, United States |
| Sénat | Haiti, United States, Canada |
| prosper louis senat American painter, US (b. 1852) |
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greg senat American football player (born 1994), US (b. 1994) |
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deadrin senat American football player (born 1994), US (b. 1994) |
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derline senat (b. 1994) |
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| marie-victoire senat researcher |
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| colson senat college basketball player (2006–2007) Robert Morris |
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