COM may refer to any of the following:
1. Short for Commercial, com or .com is a domain suffix used on the Internet to identify a business or other commercial-related website. Today, it is the most common type of Internet domain suffix. For example, the address computerhope.com is a .com address. See our dot com page for further information.
3. Com is short for communications or communications port. See the communications port definition for further information.
4. Short for Component Object Model, COM is a component software architecture from Microsoft. It defines a structure for building program routines (objects) that can be called up and executed in a Windows environment.
5. Short for Computer Output Microfilm, COM is creating microfilm or microfiche from the computer.