• .com (short for commercial), the generic top-level domain used on the Internet's Domain Name System
• dot-com company, a company which does most of its business on the Internet
• .COM (short for command), a file extension associated with DOS executable file
• "Dot Com", a song, by Usher
• DOTCOM (368266), a short code phone number used to access .com domain names by cell phone text messaging
• "Dot Com", a character played by Kevin Brown on 30 Rock

See also

• Dot-com bubble