A Perl Module is a reusable package of code written in the Perl programming language. It allows developers to organize and share code efficiently, making it easier to maintain and use across different projects. Modules can contain functions, variables, and classes, and are typically stored in files with a `.pm` extension. Perl Modules can be found in the Comprehensive Perl Archive Network (CPAN), a large repository of Perl software. By using modules from CPAN, developers can save time and effort by leveraging existing solutions for common programming tasks, enhancing productivity and code quality.