Family name Septimus (Settimo 
, Septimus 
, Semana 
) , around the world, is quite a common cognomen. The family name Septimus is habitual in Lesotho, where it is quite a rare surname, Botswana, and Philippines. Not in comparison with a country's population, it is the most numerous in Philippines, Italy, and the United States. Likewise, Septimus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Settimo | Italy, France, United States, United Kingdom, Argentina |
| Septimus | Sierra Leone, Philippines, Malaysia, United States, South Africa |
| Semana | Philippines, Malaysia, Rwanda, United States, Argentina |
| Séptimo | Spain, Dominican Republic, Mexico, Peru, Panama |
| lucius marcius septimus Roman soldier who attacked Hasdrubal in Hispania (b. 300) |
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rikki septimus South-African Dancer, actor, director and choreographer, ZA (b. 1931) |
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| matthew septimus (b. 1952) |
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| yehuda septimus (b. 1977) |
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