Geoffrey Keezer is an American jazz pianist and composer from Eau Claire, Wisconsin, who began his professional career as a teenager in the late 1980s, performing with established jazz ensembles before launching a solo recording and touring career. His musical style blends post-bop and modern jazz with elements of world music and Latin rhythms, and his work has evolved to encompass solo piano repertoire, small-group formats and compositions for chamber ensembles that emphasise rhythmic complexity and harmonic exploration.