JCT is an initialism that may refer to:
- Jean-Claude Trichet, a President of the European Central Bank
- Jerusalem College of Technology
- Joint Collaborative Team on Video Coding, a group of video coding experts from VCEG and MPEG
- Joint Committee on Taxation of the United States Congress
- Joint Contracts Tribunal
- Junction (disambiguation)
- Juxtaglomerular cell tumor
- JCT FC, Indian football club