This document discusses checklists, one of the seven basic quality tools. It defines a checklist as a comprehensive list of important actions or steps to be taken in a specific order, which can be in the form of questions or tasks. Checklists are useful when collecting data that can be repeatedly observed, from production processes, or to track frequencies and patterns of events. Examples of checklists are provided. Benefits of using checklists include organization, motivation, productivity, creativity, delegation, and safety. References are also included.