The College of American Pathologists (CAP) is a leading organization that represents more than 19,000 pathologists across the United States. However, there are many synonyms that are commonly used to refer to the CAP, such as the American College of Pathologists, or ACP. Some also refer to it as the College of Pathologists or Pathologists College of America. Additionally, the CAP is often associated with the acronym CAP-ACP, which stands for the College of American Pathologists-American College of Pathologists. Regardless of what it is called, the CAP remains a vital institution for advancing the practice of pathology and ensuring the highest standards of patient care in the United States.