ASP.NET provides a range of validation controls to ensure data integrity and accuracy in web forms. Some common types include:

1. RequiredFieldValidator: Ensures that a specific input field is not left empty.
2. RangeValidator: Validates that the input falls within a specified range of values.
3. RegularExpressionValidator: Validates input based on a specified pattern using regular expressions.
4. CompareValidator: Compares the input value with another value or a control.
5. CustomValidator: Allows for custom validation logic to be implemented.
6. ValidationSummary: Displays a summary of all validation errors on the page.
   These controls help maintain data quality and enhance user experience by providing real-time feedback on form submissions.