Pollock and Jazz, action arts from a phenomenological perspective proposes a dialogue between painting and music, more specifically between Jackson Pollock s action painting and jazz, in this research perceived as action music. This dissertation presents the possibility of thinking jazz in such way understanding it as part of the expression created by Harold Rosenberg when identifying in the artworks of Abstract Expressionism a new way of painting summarized in the act itself. Jackson Pollock s work is historically contextualized in the post-war period, which brought to modernity a doubt about the idea of progress, in relation to the existential questions disseminated by the artists of the first generation of this new North American painting. At the same time, it reflects the issue in jazz, the only musical expression that is actually North American. Both artistic expressions are responsible for placing the USA, until then a country without any cultural tradition, but that has become a great economic power, on the international cultural map. Using a phenomenological perspective from the investigations of Edmund Husserl and Maurice Merleau-Ponty, the dissertation reflects how Pollock s work - from the use of dripping and all over, which would become his trademark - and jazz - from the improvisation contained in the musical structure - can be considered action arts, produced in the path from the act of perception to the act of expression, an how much they are intentional arts and what they have of contingency. Sources of spontaneity and originality, both arts provide a new confrontation of the spectator to the work, in which what remains is the very experience generated by the act of expression. The work becomes the experience, the experience, the work.