WrestleWar '89: Music City Showdown was the first WrestleWar professional wrestling pay-per-view (PPV) event produced by World Championship Wrestling (WCW) under the National Wrestling Alliance (NWA) banner. It took place on May 7, 1989 from the Nashville Municipal Auditorium in Nashville, Tennessee.

The main event was a tag team match between Eddie Gilbert and Rick Steiner and The Varsity Club (Kevin Sullivan and Dan Spivey) for the NWA United States Tag Team Championship. Gilbert and Steiner defeated Sullivan and Spivey to retain the titles when Gilbert pinned Sullivan.

Featured matches on the undercard were The Varsity Club (Mike Rotunda and Steve Williams) versus Road Warriors (Hawk and Animal) for the NWA World Tag Team Championship, Ric Flair versus Ricky Steamboat for the NWA World Heavyweight Championship, Sting versus Iron Sheik for the NWA World Television Championship, Michael Hayes versus Lex Luger for the NWA United States Heavyweight Championship, Dynamic Dudes (Shane Douglas and Johnny Ace) versus The Samoan SWAT Team (Samu and Fatu), Dick Murdoch versus Bob Orton, Jr. in a bullrope match and The Great Muta versus Doug Gilbert. Country music group The Oak Ridge Boys performed an 8-song mini-concert at the event.