Verified answer
Does Control Resonant have Korean voice acting?
Quick answer
Steam lists Korean interface and subtitles but does not currently mark Korean for full audio.
What this means
That means Korean text support is confirmed on the PC listing while a Korean dub should not be promised. A future store update could change the matrix, so the official page remains the source of record.
Official source
Steam — Korean language support
Continue with the relevant guide
Open the related Control Resonant guide for the current topic summary, connected systems, and any later verified changes.
This answer is reviewed against pre-release official information. It states unknown boundaries explicitly and will be revised when Remedy or a first-party store publishes a newer fact.