John Wilkins, Jr. (December 22, 1761 – April 20, 1816) was a United States Army officer who served as Quartermaster General of the United States Army from 1796 to 1802.
John Wilkins, Jr. was born on December 22, 1761 in Donegal (now East Donegal), Pennsylvania and raised in Carlisle.
At age 15 the younger Wilkins enlisted for the American Revolution, and was assigned as Surgeon's Mate of the 4th Pennsylvania Regiment. He served in the position from April 8, 1780 until the close of the war on November 3, 1783.As a result of this service Wilkins earned the nickname "Doctor".
After the war Wilkins became a merchant and contractor in Pennsylvania and Presque Isle, Michigan, providing supplies and equipment to the United States Army in the Northwest Territory.
In 1793 Governor Thomas Mifflin appointed Wilkins as Brigadier General of the Allegheny County Militia as part of Pennsylvania's response to the Whiskey Rebellion.
President George Washington appointed Wilkins as Quartermaster General of the United States Army in June, 1796. In October Wilkins attempted to resign, pleading the necessity of attending to personal business. His resignation was not accepted and he continued to serve, overseeing the supplying and equipping of an expanded Army in anticipation of war with France. Although the act of March 3, 1799 provided for a Quartermaster General with rank of major general, Wilkins was not appointed to that rank and served in the position as a civilian. The dispute with France was resolved without fighting, and Wilkins served until his position was abolished in March, 1802 as part of a downsizing of the Army.