RU

RU may refer to any of the following:

1. Short for registry usage, RU is a Windows Sysinternals utility to view the registry space usage for the specified registry key.

2. When discussing a domain, .ru is the country code for Russia.

3. Shorthand for are you, RU is a term used in text-based communications such as chat, for example:

RU ok?
Hey, RU there?
How RU doing?
RU serious?

Chat terms