RCX may refer to:
- Remote code execution, when malware can run its own code on a compromised system
- RCX register, a 64-bit processor register of x86 CPUs
- Rally Championship Xtreme
- Retrocommissioning (RCx), see National Environmental Balancing Bureau § Fumehood Testing (FHT) and Retro-Commissioning (RCX) Programs
- A Lego Mindstorms controller device
- The circumflex branch of left the coronary artery
This disambiguation page lists articles associated with the title RCX.
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