I'm from Turkey.Can i activate a EU-region locked cd key?

I mean Turkey's are meant to be eaten so right now they are all bundled up in a lil package in a freezer at Kroger. Jokes aside apparently Turkey is in a place called "Eurasia". So, I'm guessing you should be able to. Might depends on how close you are to Europe or Asia. Not sure though.

According to G2A you can't

G2A has a "check restrictions" option, for example search for a steam game key Europe and in the listing page it will tell you if it can be redeemed in your country and if you press "Check Restrictions" you can choose any country from a long list of countries to check if the region locked key will activate in it or not.

I know from steamdb.info that Turkey has different prices (usually lower from EU Steam Store).

Sıkıntısız aktive edersin.

. i was wrong

It depends on the game/publisher. Some publishers add Turkey to the EU, some add Turkey to RU/CIS, some create a new depot entry for Turkey - fully region locked.

If you give me the name of the game, I can help you.