The Smash Diva Championship was a women's professional wrestling championship, owned by the Japanese Smash promotion. Championship reigns were determined by professional wrestling matches, in which competitors were involved in scripted rivalries. These narratives created feuds between the various competitors, which cast them as villains and heroines.

The tournament to crown the inaugural champion was held over three months and four events. The first round was held over two events, Smash.18 and Smash.19 on June 9 and July 15, 2011, with the semis on Smash.20 on August 11, 2011, and the final on Smash.21 on September 8, 2011.

Over the championship's six-month history, there have been four reigns between three champions. Kana was the inaugural champions, and holds the record for most reigns at two. Syuri was the last champion. Kana's first reign was the longest at 77 days, while Syuri's reign was the shortest at 24 days. Kana was the oldest champion at 30 years old, while Syuri is the youngest at 23 years old.

• Smash (professional wrestling)
• Smash Championship
• WNC Women's Championship