Where does “Kööpenhamina” come from?

Kööpenhamina (Finnish) comes from Swedish Köpenhamn, from Old Swedish *Kø̄pmanhafn.

Ancestry of “Kööpenhamina”, step by step

Step	Language	Word	Meaning
1	Swedish	Köpenhamn	—
2	Old Swedish	*Kø̄pmanhafn	—

Kööpenhamina — Etymology, Origin & Word History | Etymology Explorer