The abbreviation "MD" can have multiple meanings depending on the context in which it is used.
- In medicine, MD stands for Medical Doctor, a professional title awarded to physicians who have completed their medical education and training.
- In some countries, particularly those using a British or Commonwealth legal system, MD may also refer to Magister Degree, an academic degree equivalent to a master's degree in the United States.
- Within the field of business administration, MD can stand for Managing Director, which is a senior executive position responsible for managing a company or organization.