Nathan Crook Twining (17 January 1869 – 4 July 1924) was a rear admiral of the United States Navy.

He was raised, in part, by his father's third wife, Margaret E. "Maggie" Rockwell (1849–1919) of Batavia, Kane County, Illinois.

[1] During the Spanish–American War, he served in Iowa (BB-4) in Cuban waters and later was executive officer of Kearsarge (BB-5) when that ship circumnavigated the globe with the Great White Fleet.

It was not placed in production, but provided the conceptual basis for the upscale 3 inch anti-aircraft cannon mounted on most U.S. warships during World War I.

During World War I, he served as Chief of Staff for Admiral William Sims, Commander of Naval Forces in European waters.