Charles Armijo Woodruff (January 12, 1884 – November 23, 1945) was a United States Navy officer and the governor of American Samoa from December 6, 1914, to March 1, 1915.

He captained multiple ships in both the Navy and the United States Merchant Marine.

He served only briefly as governor, for a few months before ceding the office to John Martin Poyer.

On November 23, 1945, Woodruff died by suicide by hanging in an apartment in Hotel Bossert, Brooklyn, New York City, using the venetian blinds cord in his room.

[2] Woodruff relieved Nathan Post of the governor's office on December 6, 1914, serving until March 1, 1915.