Jo

Jo, jo, JO, or J.O. may refer to:

John Winston Ono Lennon (9 October 1940 – 8 December 1980) was an English singer, songwriter, and peace activist who co-founded the Beatles, the most commercially successful band in the history of popular music.

John Felix Anthony Cena Jr. (; born April 23, 1977) is an American professional wrestler, actor, rapper, and television host.

Joseph Stalin (born Ioseb Besarionis dze Jughashvili; 18 December 1878 – 5 March 1953) was a Soviet revolutionary and politician of Georgian ethnicity.

Joseph Robinette Biden Jr. (; born November 20, 1942) is an American politician who served as the 47th vice president of the United States from 2009 to 2017. A member of the Democratic Party, he represented Delaware in the U.S.

John Sidney McCain III (August 29, 1936 – August 25, 2018) was an American politician and military officer who served as a United States Senator from Arizona from January 1987 until his death.

Johnny Cash (born J.R. Cash, February 26, 1932 – September 12, 2003) was an American singer-songwriter, guitarist, actor, and author.

The Jonas Brothers were an American pop rock band. Formed in 2005, they gained popularity from their appearances on the Disney Channel television network.