XC

XC may refer to:
* A Christogram
* The number 90 in Roman numerals — meaning ten (X) less than one hundred (C)
* Cross-country sports (abbreviation)
**Cross-country running
**Cross-country skiing
**Cross-country cycling
**Cross-country equestrianism
* A model of the Ford Falcon, an Australian car
* X_C, or capacitive reactance, a property of a capacitor
* Xavier College (Melbourne), a school in Australia
* XC Trains Ltd., the company name of the brand CrossCountry, a train operating company in the United Kingdom
* Another annotation of cc (carbon copy), meaning "Xerox copy"