The pelvic diaphragm is a complex network of muscles and tissues that sits at the base of the pelvis. Although it has a specific name, there are several synonyms and related terms that may be used to describe it. These include the pelvic floor, pelvic muscles, pelvic girdle, and levator ani. Each of these terms refers to the same anatomical region, but may be used in different contexts or for different purposes. Regardless of the term used, the pelvic diaphragm plays a critical role in supporting the pelvic organs, maintaining continence, and facilitating sexual function. Therefore, it is important to understand its anatomy and function when considering pelvic health and wellness.