Nim may refer to any of the following:
1. Originally named Nimrod, Nim is a computer programming language first introduced in 2008 that enforces a high level of data type safety. Nimrod is used in software development projects that require strict limits on how a system's memory is used. Here is an example of a "Hello, World!" program written in Nim:
echo "Hello World!"
2. Shorthand for No Internal Message, NIM is sometimes used at the end of an e-mail subject line to indicate there is nothing more to the message than that said on the subject. NIM helps the reader know they don't have to open the message. Since most e-mail programs and services now have a preview of the message body, NIM is rarely used today.