Portrait of a Man (Self Portrait?) (also Portrait of a Man in a Turban or Portrait of a Man in a Red Turban) is an oil painting by the Early Netherlandish painter Jan van Eyck, from 1433. It has been in the National Gallery, London since 1851, having been in England since Thomas Howard, 21st Earl of Arundel acquired it, probably during his exile in Antwerp from 1642-44.
The panel contains an inscription at the top reading Als Ich Can which was intended as "as I/Eyck can". It is, along with the unusually confrontational gaze, taken as an indication that the work is a self-portrait; probably his Portrait of Margaret van Eyck was a pendant.
The man is not, as it is commonly thought, wearing a turban, but a chaperon with the ends that normally hang down tied up over the top, which would be a sensible precaution if it was worn whilst painting.
The original frame survives (the vertical sides are in fact a single piece of wood with the central panel), and has the painted inscription JOHES DE EYCK ME FECIT ANO MCCCC.33. 21. OCTOBRIS ("Jan van Eyck Made Me on October 21, 1433") at the bottom and at the top the motto AlC IXH XAN ("I Do as I Can"), which appears on other van Eyck paintings, always written in Greek letters, and includes a pun on his name. As on other van Eyck frames, the letters are painted to appear carved.
Like all van Eyck's portraits, it shows a sharp and detailed analysis of the physical lines. The subject is often thought to be van Eyck himself, though there is no direct evidence for this. The costume is appropriate for a man of van Eyck's social position, and the motto is his personal one, otherwise only appearing on two surviving religious paintings, two more known only from copies, and the portrait of his wife. In none of these is it as prominent as here, a primary reason, along with the very direct but bloodshot gaze, why the work is usually viewed as a self-portrait. Some art historians view the work as a form of calling card for prospective clients, where van Eyck may be saying "look at what I can do with paint, how lifelike I can make my figures".