The Portrait of Adam Mickiewicz on the Ayu-Dag Cliff () is an oil portrait of Adam Mickiewicz by Walenty Waà Âkowicz created from 1827 to 1828. Since 1925 it has been in the collection of the National Museum in Warsaw.
Created in the Romanticism style, the portrait depicts Mickiewicz in a Byronic pose leaning on a cliff of the Ayu-Dag Mountain, Crimea overseeing the Black Sea, coated in a burka (a coat of the highlanders of Caucasus).
The theme and the title of the portrait come from the first line of the last sonnet Ajudah (translated as "") of The Crimean Sonnets by the poet:
Waà Âkowicz befriended Mickiewicz at Vilnius University. The portrait was created when they met again in St.Petersburg. At that time Mickiewicz introduced Waà Âkowicz to Alexander Pushkin, and Waà Âkowicz started to work on the portrait of Pushkin as a pair to that of Mickiewicz. Unfortunately only the sketch Pushkin by a Source survived.