British official war artists were a select group of artists who were employed on contract, or commissioned to produce specific works during the First World War, the Second World War and select military actions in the post-war period. Official war artists have been appointed by governments for information or propaganda purposes and to record events on the battlefield; but there are many other types of war artist.

A war artist is an artist either commissioned by a government or publication, or self-motivated, to document first-hand experience of war in any form of illustrative or depictive record. War artists explore the visual and sensory dimensions of war, often absent in written histories or other accounts of warfare.