DOM Events are actions or occurrences that happen in the Document Object Model (DOM) of a web page, such as clicks, key presses, or mouse movements. These events allow developers to create interactive web applications by responding to user actions. When an event occurs, it can trigger specific functions or behaviors in the web page. Events can be categorized into different types, including Mouse Events, Keyboard Events, and Form Events. Each type has its own set of properties and methods that developers can use to handle them effectively. By listening for these events, developers can enhance user experience and create dynamic content.