Kenneth Charles Marion Rexroth was an American poet, translator, and critical essayist. He is regarded as a central figure in the San Francisco Renaissance, and paved the groundwork for the movement. Although he did not consider himself to be a Beat poet, and disliked the association, he was dubbed the "Father of the Beats" by Time magazine. Largely self-educated, Rexroth learned several languages and translated poems from Chinese, French, Spanish, and Japanese.

The term San Francisco Renaissance is used as a global designation for a range of poetic activity centered on San Francisco, which brought it to prominence as a hub of the American poetry avant-garde in the 1950s. However, others felt this renaissance was a broader phenomenon and should be seen as also encompassing the visual and performing arts, philosophy, cross-cultural interests, and new social sensibilities.