R63 may refer to:
Roads
editOther uses
edit- HMS Concord (R63), a destroyer of the Royal Navy
- HMS Venerable (R63), an aircraft carrier of the Royal Navy
- Mercedes-Benz R63 AMG, a performance-oriented MPV
- R63: Possible risk of harm to the unborn child, a risk phrase
- a size of light bulb reflector
- clipping of Rule 63