Freddie Joe "Jack" Brisco (September 21, 1941 – February 1, 2010) was an American amateur wrestler and professional wrestler. As an amateur for Oklahoma State, Brisco was two-time All-American and won the NCAA Division I national championship. He turned pro shortly after and performed for various territories of the National Wrestling Alliance (NWA), becoming a two-time NWA World Heavyweight Champion, and multi-time NWA World Tag Team Champion with his brother Gerald Brisco.

Brisco is considered one of the greatest wrestlers of his era. Legendary champion Lou Thesz described him as "one of the toughest and most highly skilled wrestlers of the last 50 years". Don Leo Jonathan called him "probably the greatest champion of the 20th century." In the late 1970s, the Brisco brothers discovered Terry Bollea, the future wrestling legend best known as Hulk Hogan, whom they introduced to Hiro Matsuda for training.

Freddie Joe Brisco was born in Seminole, Oklahoma, one of five siblings. He and his family were members of the Chickasaw Nation. He was raised mainly in Blackwell, and grew up as a fan of professional wrestling, and particularly a fan of Lou Thesz, Danny Hodge and Dick Hutton.

Brisco started wrestling at Stillwater High School and was a three-time state champion. He was also an all-state fullback on the high school football team.

Brisco was followed by his younger brother, Gerald, into sport wrestling and turned down a football scholarship at University of Oklahoma to go to Oklahoma State. During his junior year in 1964, he was NCAA runner-up in the 191 lbs weight class. In 1965, he improved on his finish, and by doing so became the first Native American to win an NCAA Wrestling National Championship. During this senior campaign, he wasn't taken down once during the entire season.

Brisco grew up idolizing Danny Hodge and had wanting to also be a professional wrestler. Hodge had ties to Leroy McGuirk, a local promoter who contacted Brisco in his senior year. McGuirk helped Brisco get started in his professional wrestling career, leading to Brisco wrestling Ronnie Garvin for his first match. At the start of his career, he wrestled around Oklahoma for around a year then he went to the Tennessee territory to work for Nick Gulas for four weeks. Brisco returned to Oklahoma then went on to have stints in Texas and Australia.

Brisco's first documented professional wrestling championship reign began on October 16, 1965, when he defeated Don Kent to win the NWA Missouri Junior Heavyweight Championship. He held the belt for less than a month, and regained it in November by defeating Kent again. Around this time, Brisco also wrestled for NWA Tri-State. While there, he won a couple of state titles (the Oklahoma Heavyweight Championship and the Arkansas Heavyweight Championship). He also won his first tag team title in this promotion, teaming with Haystacks Calhoun for his first reign as co-holder of the Tri-State version of the NWA United States Tag Team Championship. He later held the title again, as he teamed with Gorgeous George, Jr. to win the belts on May 9, 1967.

Brisco then moved to the Florida area, where he wrestled for Championship Wrestling from Florida for several years. His first title there was the NWA Florida Southern Heavyweight Championship, which he won on February 11, 1969, by defeating The Missouri Mauler. He dropped the title to the Mauler and regained it on July 8. Two weeks later, he won the first of an eventual ten NWA Florida Tag Team Championships, with Ciclon Negro. Although he and Negro dropped the tag team belts the following month, Brisco held the Southern Heavyweight Title until November 1969, when he left the area to wrestle in Japan and Australia.