Improvaganza may refer to:
An annual international improvisation festival in Honolulu Hawaii called Improvaganza hosted by Garrick Paikai and On The Spot Improv Hawaii established in 2005. https://otsimprov.com/ https://www.honolulumagazine.com/something-to-see-improvaganza-x-hawaii-festival-of-improv/ An annual international improvisation festival by Rapid Fire Theatre Drew Carey's Improv-A-Ganza, an improvisational comedy television program