Which documents usually need this
Documents issued by your home country and written in a language other than Turkish generally need a certified (sworn) Turkish translation before Turkish authorities will accept them — this commonly applies to marriage certificates, birth certificates, criminal background checks, and some foreign income/employment letters.
Separately, some foreign-issued official documents need an apostille from the relevant authority in your home country before they even leave — get this done before you travel if you know you'll need it, since it's far harder to arrange from inside Türkiye.
Frequently Asked Questions
Not sure which of your documents need this?
The Istanbul Route Check includes a document review for your specific situation.
See the Istanbul Route Check