Jack Wishna, American businessman, co-founded Rockcityclub (d. 2012)
Jack Wishna (May 5, 1958 – November 27, 2012) was an American businessman and photographer. He was the president and CEO of CPAmerica, a consulting firm for gambling, hotel, and leisure organizations, based in Las Vegas, Nevada. He was also a founder of Rockrena Inc., which launched Rock City Club, a social music network.Wishna had been called "a wheeler and dealer in the gaming industry". Wishna "put together a deal potentially worth $250 million for Wayne Newton" at the Stardust Resort & Casino, and had worked with celebrities such as Michael Flatley, Britney Spears, Richard Branson and Mohamed al-Fayed on projects in Las Vegas. He had also partnered with Tony Orlando.

He was credited with bringing Donald Trump to Las Vegas by facilitating the partnership between Trump and Phil Ruffin.

Wishna helped convince Michael Jackson to return to America after 18 months in exile, and worked with him for seven months in an effort to create his comeback. According to Norm Clarke, Wishna "was instrumental in having the pop icon move back to the United States." Wishna was Jackson's friend and worked on several projects with him, including Wishna's Rock City Club project and presenting Cirque du Soleil with the idea to do a Michael Jackson show based upon the Thriller song and Jackson's many #1 hits.Wishna founded Rockrena, Inc. and the Rock City Club brand with music promoter Don Kirshner.

In 2012, Rock City Club partnered with Slacker online music service to create what it described as the world's first internet music channel devoted exclusively to giving undiscovered artists and bands the chance to have their music heard by millions of potential fans. Some of the biggest music producers in the world, with 162 Grammy Awards to their names, participate in Rock City Club. The channel is headed by Ron Dante and includes the production expertise of people like Phil Ramone, Kerry Gordy (son of Motown legend Berry Gordy), and Lamont Dozier.