This chapter explores Kerouac’s poetic output, arguing that he should be considered an important twentieth-century poet and poetic innovator. In particular, this chapter explores Kerouac’s book-length poetic masterwork, Mexico City Blues, and his development of an American form of haiku, as found in Book of Haikus and elsewhere. The poetic forms of Mexico City Blues and Book of Haikus are very different, and yet taken together, they demonstrate Kerouac’s range as a poet. With these major works as its focus, this chapter aims to reassess Kerouac’s poetry by reading its formal and thematic preoccupations in terms of the advent of the mid-century “New American Poetry,” which rebuked the norms of the reigning poetic establishment centered in universities and their associated anthologies and quarterlies.