Kosak Last Name: Meaning and Heraldic Roots

The last name Kosak is a variant form of Kozak, a well-known Polish family name.

Local scribes, dialects and emigration all left their mark on how the name was written. Spelled with “s” instead of “z”, Kosak shows how the same name was heard and written differently.

Heraldry is personal: arms associated with the Kozak surname were borne by specific families, and sharing the name does not mean sharing the blazon. Research your Kosak family history with a full surname report and painted coat of arms.