x.com may refer to:
A single-letter second-level domain on the internet, currently owned by X Corp. X (social network), a social media platform formerly known as Twitter that currently uses the x.com domain X.com (bank), a defunct online bank
See also XCOM (disambiguation) x.co, URL shortening x.org (disambiguation)
X Corp., the parent company of the social network :/x/, 4chan board EXCOMM