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 | France, Haiti, North Macedonia, Dominican Republic, United States |
| Senatus | France, Haiti, Dominican Republic, United States, Brazil |
| Senato | Ethiopia, Philippines, Brazil, United States, India |
| Sénat | Haiti, Canada, United States |
| 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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