"Acquainted with the Night" is a poem by Robert Frost. It first appeared in the Autumn 1928 issue of the Virginia Quarterly Review and was republished later that year in his poetry collection West-Running Brook.
The poem is written in strict iambic pentameter, with 14 lines like a sonnet, but with a terza rima rhyme scheme which follows the complex pattern of: ABA BCB CDC DAD AA. An earlier example of the measure's adaptation to the sonnet form is found in Percy Bysshe Shelley's "Ode to the West Wind".
The poem first appeared in the Autumn 1928 issue of The Virginia Quarterly Review, edited by James Southall Wilson. It was republished that year by Henry Holt and Company in the poetry collection West-Running Brook.