Frank Newbould (24 September 1887 – 1951) was an English poster artist, born in Bradford.
Educated at Bradford College of Art and Camberwell School of Art, he worked mostly in London from the interwar period specialising in travel posters.
His clients included the Empire Marketing Board; London Transport and its predecessors; the London & North Eastern, Great Western and London, Midland and Scottish Railways, and the Orient and Cunard Lines.
In 1942 he joined the War Office as assistant to Abram Games where he produced eleven posters, including a series Your Britain, Fight for it Now.
His work was characterised by bold shapes and colours.