Josef Franz Wagner (20 March 1856 – 5 June 1908) was an Austrian military bandmaster and composer. He is sometimes known by the sobriquet 'The Austrian March King'. He is best known for his 1902 march Unter dem Doppeladler or Under the Double Eagle, referring to the double eagle in the coat of arms of Austria-Hungary. The march became a favourite part of the repertoire of American composer and bandleader John Philip Sousa, who recorded it three times. The piece was the official regimental march of the Austrian Artillery Regiment Number 2 till its dissolution in 2007.