WXw Unified World Wrestling Championship

The wXw Unified World Wrestling Championship is a professional wrestling world heavyweight championship, contested in the German professional wrestling promotion, Westside Xtreme Wrestling. The championship was established in 2001 as the wXw World Heavyweight Championship, but was later unified with the wXw World Lightweight Championship to create the modern title.

There have been a total of 56 reigns shared between 39 different champions. Mad Cow was the inaugural champion. Big van Walter, John Klinger and Jurn Simmons shares the record for most reign with three. Ares's second reign is the longest at 603 days, while Alex Shelley, Jimmy Jacobs and Marty Scurll reign is the shortest at less than hour. The current champion is Peter Tihanyi who is in his second reign.

At wXw 23rd Anniversary on December 23, 2023, Robert Dreissker defeated Masha Slamovich to unify the title with the wXw Women's Championship.

As of November 12, 2025.