John Doyle (Dublin 1797 – 2 January 1868 London), known by the pen name H. B., was an Irish political cartoonist, caricaturist, painter and lithographer.

In his youth he learned to paint landscapes under Gaspare Gabrielli, and miniature portraits at the Royal Dublin Society's drawing school under John Comerford.

He was commissioned to paint equestrian portraits of the Marquess of Sligo and Lord Talbot, the Irish viceroy, and in 1822 he produced six prints entitled The Life of a Racehorse.

Doyle continued to exhibit miniatures until 1835, but by then he was experiencing greater success with his political cartoons, printed using the new reproductive medium of lithography, beginning in 1827.

When he died in 1868, his obituary in The Art Journal did not appear until three months after his death, and a posthumous sale of his sketches at Christie's in 1882 was cancelled for lack of buyers.