Cognomen Okas (Okas 
, โอกาส , Окас 
) , around the globe, is a rare family name. The family name Okas is characteristic of Estonia, where it is quite a common surname, Lithuania, where it is a rare surname, and Poland. In absolute terms, the name is most common in Estonia, Thailand, and Poland. Also, Okas is the forename as well as the last name.
| martin okas EE (b. 1864) |
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| august okas Estonian physician and medical researcher (1904-1987), EE (b. 1904) |
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| johannes okas (b. 1902) |
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| jüri okas Estonian architect, EE (b. 1950) |
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| daniel okas Finnish musician, FI (b. 1998) |
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