Last name Κωστούλας (Κωστούλας 
) , across the world, is an extremely rare family name. The family name Κωστούλας is habitual in Southern Europe, particularly Greece, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Κωστούλας | Greece |
| κωνσταντίνος κωστούλας Greek writer and public servant, GR (b. 1932) |
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| κωνσταντίνος κωστούλας businessman, GR (b. 1957) |
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| θανάσης κωστούλας Greek footballer, GR (b. 1976) |
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| θεόφιλος κωστούλας Greek assistant director, GR |
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