Robert Storm Petersen (19 September 1882 – 6 March 1949) was a Danish cartoonist, writer, animator, illustrator, painter and humorist.

He is known almost exclusively by his pen name Storm P. [2] He was the son of a butcher and grew up in Copenhagen in a lower middle class environment.

After interrupted studies at the Academy of Art, he worked as a free-lance painter, illustrator and cabaret entertainer.

Already during World War I he was a well-known artist, and from about 1920 onward he was almost a national "institution" as a humorist, partly because of his versatile interests.

Often his starting point is a plain Copenhagen jargon, combined with a Danish down-to-earth homespun philosophy and all kinds of fun and comedy; the common man's unimpressed comments on a crazy world.

Among his favourite themes are the vagabonds – who are portrayed as dressed-up petty philosophers – and the circus milieu that he regarded with much warmth.

In 1920 Petersen created the first Danish animated cartoon titled Tre små mænd ("Three Small Men").