Doctor of Law or Doctor of Laws is a degree in law. The application of the term varies from country to country and includes degrees such as the Doctor of Juridical Science (J.S.D. or S.J.D), Doctor of Philosophy (Ph.D.), Juris Doctor (J.D.), and Legum Doctor (LL.D.).

Doctor of Juridical Science (or Scientiae Juridicae Doctor), abbreviated as S.J.D. or D.J.S. Applicants for S.J.D. programs must first earn a J.D., and some programs require both a J.D. and an LL.M. before admission.[38][39] Similar to the Ph.D., the S.J.D. is a research doctorate and has been described as the "highest degree in law" by the University of Virginia,[40] as well as the "terminal degree in law" by Indiana University[41] and Harvard Law School.[42] It has also been called the "most advanced law degree" by Yale Law School,[43] Georgetown Law,[44] New York University,[45] and Stanford University.[46] The University of Connecticut School of Law explains that this specific degree is "intended for individuals who have demonstrated evidence of superior scholarly potential."[47]

The National Association of Legal Professionals states that the S.J.D./D.J.S. is "the most advanced or terminal law degree that would follow the earning of the LL.M. and J.D. degrees."[48] It typically requires three to five years to complete and requires an advanced study in law as a scientific discipline and a dissertation, which serves as an original contribution to the scholarly field of law.[39][49][50]

As with most other countries, in the United States, the Legum Doctor (LL.D.), also colloquially known in English as Doctorate of Laws, is granted only as an honorary degree.