Family name Sebastià (Sebastia 
, Sebastià 
) , across the world, is quite a rare cognomen. The surname Sebastià is habitual in Spain, where it is quite a rare surname, France, where it is a rare surname, and Argentina. Also, Sebastià is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sebastia | France, Spain, Tanzania, Argentina, Paraguay |
| Sebastià | Finland, Germany, France, Spain, United States |
Seba, Sebastiaan, Sebastiaen, Sebastian, Sebastiano, Sebastianus, Sebastien, Sebastián, Sebastião, Sébastien, Себастиан, Себастиано, Себастьен, Себастьян, Себастьяно, Севастиан, סבסטיאן, سباستيان, سيباستيان, セバスチャン, セバスティアン, and 塞巴斯蒂安
| enric bayon sebastià (b. 1890) |
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| josep abarcat i sebastià ES (b. 1900) |
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jordi sebastià i talavera Spanish politician, ES (b. 1966) |
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| e. sebastià (b. 1930) |
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| rafael ferraro sebastià Spanish politician, ES (b. 1942) |
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| joan-hilari muñoz i sebastià (b. 1965) |
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| rafael sebastià i irla Spanish politician, ES |
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| m. teresa sebastià researcher, ORCID id # 0000-0002-9017-3575 |
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| hèctor coll sebastià Spanish Valencian pilotari, ES (b. 1982) |
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