"Trouble at a Tavern", or "Trouble at an Inn" (Welsh: Trafferth mewn Tafarn), is a short poem by the 14th-century Welsh poet Dafydd ap Gwilym, in which the poet comically narrates the mishaps which prevent him from keeping a midnight assignation with a girl. Dafydd is widely seen as the greatest of the Welsh poets, and this is one of his best-known poems. It has been described as "glorious farce", "one of Dafydd ap Gwilym's funniest and most celebrated cywyddau", and "the most vivid of [his] poems of incident".