In May 1975, Jones joined World Championship Wrestling (WCW) and teamed with Wahoo McDaniel to defeat The Minnesota Wrecking Crew to win the WCW World Tag Team Championship. The Wrecking Crew regained the championship the next month in a televised rematch known as the "Supreme Sacrifice" match, which saw Ole Anderson ram his brother Gene's head into McDaniel's head with enough force to knock both men unconscious, enabling Ole Anderson to pin McDaniel.
After the WCW United States Heavyweight Championship was vacated when Johnny Valentine was injured, Jones competed in a one-night tournament on November 9, 1975 to crown a new champion, winning four bouts before losing to Terry Funk in the final. Jones defeated Funk for the championship in a rematch held later that month. He went on to trade the championship with Blackjack Mulligan, holding it on a total of three occasions before his final reign ended in December 1976.
In 1975, Jones began teaming with Ricky Steamboat. They held the WCW World Tag Team Championship on one occasion. Their alliance ended in December 1978, when Jones attacked Steamboat at the end of a battle royal, turning heel.
After turning heel, Jones formed a new alliance with Baron von Raschke (whom Jones had had a brief feud with prior), with the duo winning the WCW World Tag Team Championship twice in 1979, and feuding with tag teams such as Ric Flair and Blackjack Mulligan and Jay Youngblood and Steamboat. The team ended when Jones turned on von Raschke. Jones subsequently began teaming with The Masked Superstar (another former foe), winning the WCW World Tag Team Championship again in 1980 and 1981.
In 1982, Jones became a manager, forming a large stable called Paul Jones' Army. Many top heels were members of Jones' stable at one time, among them The Masked Superstar, Superstar Billy Graham, Ivan Koloff, Rick Rude, Manny Fernandez, Abdullah the Butcher, and The Powers of Pain. Jones' character had a "startlingly uncomfortable presence"; at one point, he began wearing khakis and jackboots and cultivated a toothbrush mustache. Jones' villainous behavior led fans to mock him with chants of "weasel".
In 1988, The Powers of Pain began feuding with The Road Warriors, with Jones claiming that The Powers of Pain were stronger than their opponents. In a memorable angle that aired on WCW Saturday Night, The Powers of Pain faced The Road Warriors in a weightlifting contest with $50,000 on the line. The contest ended abruptly when Ivan Koloff blinded Road Warrior Animal, using chalk dust, enabling The Powers of Pain to beat down The Road Warriors.
Jones left WCW in 1989.
On April 18, 2018, Jones passed away.