Short for traditional jazz, a music genre popular in Britain and Australia from the 1940s onward through the 1950s and which still has enthusiasts today. It represented a recreation of the sounds and playing styles of New Orleans Dixieland jazz, with bands of this genre copying the playing style of such artists as Sidney Bechet and King Oliver.

In Britain during the 1950s and 1960s, trad jazz was used to dance skip jive, a descendant of jive and swing dance.

For definition, many aficionados today consider trad to be the traditional playing of a piece with solo after solo leading up to a finish rather than more ensemble playing with less individual virtuosity brought to the forefront. Ironically, one of the ensemble players in King Oliver's Original Creole Band, Louis Armstrong, was by far the most influential of the soloists, creating a big demand for the new style of jazz in the late 1920s and early 1930s. Other influential stylists who are still revered in traditional jazz circles today include Sidney Bechet, Bix Beiderbecke and Muggsy Spanier.