John James Toffey (June 1, 1844 – March 13, 1911) was a United States Union Army officer during the American Civil War who received the Medal of Honor.

He participated in the November 23, 1863 Battle of Missionary Ridge, at Chattanooga, Tennessee, and it was there that he performed the act of bravery that garnered him the Medal of Honor.

While still in service, he was an eyewitness to Lincoln's assassination at Ford's Theater, participated in the search for the conspirators, testified at their trial, and witnessed their subsequent execution.

After the war, he became a Companion of the New York Commandery of the Military Order of the Loyal Legion of the United States.

Citation: Although excused from duty on account of sickness, went to the front in command of a storming party and with conspicuous gallantry participated in the assault of Missionary Ridge; was here wounded and permanently disabled.