X.com may refer to:
- A single-letter second-level domain on the internet, currently owned by X Corp.
- Twitter, a social media platform officially named X that currently uses the X.com domain
- X.com (bank), a defunct online bank
See also
edit- XCOM (disambiguation)
- X.Org (disambiguation)
- X (disambiguation) § Companies
- X Corp., the parent company of the social network
- EXCOMM