Kubla Khan: or A Vision in a Dream is a poem written by Samuel Taylor Coleridge, completed in 1797 and published in 1816. It is sometimes given the subtitles "A Vision in a Dream" and "A Fragment." According to Coleridge's preface to Kubla Khan, the poem was composed one night after he experienced an opium-influenced dream after reading a work describing Shangdu, the summer capital of the Mongol-led Yuan dynasty of China founded by Kublai Khan. Upon waking, he set about writing lines of poetry that came to him from the dream until he was interrupted by "a person on business from Porlock". The poem could not be completed according to its original 200–300 line plan as the interruption caused him to forget the lines. He left it unpublished and kept it for private readings for his friends until 1816 when, at the prompting of Lord Byron, it was published.

Samuel Taylor Coleridge was an English poet, literary critic, philosopher, and theologian who, with his friend William Wordsworth, was a founder of the Romantic Movement in England and a member of the Lake Poets. He also shared volumes and collaborated with Charles Lamb, Robert Southey, and Charles Lloyd.