Jack Spicer (January 30, 1925 - August 17, 1965) was an American poet often identified with the San Francisco Renaissance.
Spicer was born in Los Angeles and spent most of his writing life in San Francisco. He spent the years 1945 to 1955 at the University of California, Berkeley, where he began writing, doing work as a research linguist, and publishing some poetry (though he disdained publishing). During this time he searched out fellow poets, but it was his alliance with Robert Duncan and Robin Blaser that Spicer forged a new kind of poetry, and together they referred to their common work as the Berkeley Renaissance. Spicer's poetry of this period is collected in One Night Stand and Other Poems (1980). His Imaginary Elegies, later collected in Donald Allen's The New American Poetry 1945-1960 anthology, were written around this time.