Portrait of Jacques Nayral (also known as Portrait de Jacques Nayral) is a large oil painting created in 1911 by the French artist, theorist and writer Albert Gleizes (1881–1953). It was exhibited in Paris at the Salon d'Automne of 1911 (no. 609), the Salon de la Section d'Or, 1912 (no. 38), and reproduced in Du "Cubisme" written by Jean Metzinger and Albert Gleizes in 1912, the first and only manifesto on Cubism. Metzinger in 1911 described Gleizes' painting as 'a great portrait'. Portrait of Jacques Nayral, one of Gleizes' first major Cubist works, while still 'readable' in the figurative or representational sense, exemplifies the mobile, dynamic fragmentation of form characteristic of Cubism at the outset of 1911. Highly sophisticated in theory and in practice, this aspect of simultanei