J.J. Jazzmen is a Czech jazz band.
The band was formed in 1993. Under the leadership of leader Jan Jirucha, who also gave the band its name, the band performed with the program Remembrance of Louis Armstrong in many places around the world: in Germany, Denmark, USA, England, France, Switzerland or Italy. In 2000, Armstrong's former "All Stars" bandmate, clarinetist Joe Muranyi, guested with the J.J. Jazzmen in Prague and Berlin. The following year, the band was honored with an invitation to the cradle of jazz. They played in Louis Armstrong's birthplace in May 2001 at the famous New Orleans Jazz & Heritage festival.