Donald Caldwell Arthur Jr. (born January 4, 1950)[1][2] is a former United States Navy medical corps vice admiral (VADM).

He deployed with the Marine Corps Second Medical Battalion during Operation Desert Shield/Storm[7] but never served under combat conditions.

He served as director of Marine Corps Medical Programs, as assistant chief for Naval Health Care Operations and as Deputy Surgeon General.

Arthur was an advocate for service members who incurred and suffered with Traumatic Brain Injury.

Burkett urged then-Chairman of the Joint Chiefs of Staff Admiral Michael Mullen to investigate Arthur, claiming that some of his education credentials were inappropriate, because they had been obtained from unaccredited institutions, and that they had influenced his promotions within the Navy.

In turn, Arthur claimed that he had been misinformed about the institution's accreditation, and that an internal investigation by the Navy had cleared him of any wrongdoing.