HTML tables are a way to organize and display data in a structured format on web pages. They consist of rows and columns, where each cell can hold text, images, or other types of content. Tables are created using the <table> tag, with <tr> for rows, <td> for data cells, and <th> for header cells. Using tables helps improve the readability of information, making it easier for users to compare data. They are commonly used for displaying schedules, lists, and other types of structured information on websites. Proper use of tables can enhance the overall user experience.