Where does “تركیا” come from?

تركیا (Ottoman Turkish) comes from Latin Turcia, from Byzantine Greek Τουρκίᾱ.

Ancestry of “تركیا”, step by step

Step	Language	Word	Meaning
1	Latin	Turcia	—
2	Byzantine Greek	Τουρκίᾱ	—

تركیا — Etymology, Origin & Word History | Etymology Explorer