John or Jack Ross may refer to: Wikipedia
Sir John Ross (24 June 1777 – 30 August 1856) was a Scottish Royal Navy officer and polar explorer. He was the uncle of Sir James Clark Ross, who explored the Arctic with him, and later led expeditions to Antarctica. Wikipedia
John Ross (; October 3, 1790 – August 1, 1866) was the Principal Chief of the Cherokee Nation from 1828 to 1866; he served longer in that position than any other person. Ross led the nation through such tumultuous events as forced removal to Indian Territory and the American Civil War. Wikipedia
John Ross VC (1822 – 23 October 1879) was a Scottish recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces. Wikipedia