John Altenburgh (born John Altenburg, April 20, 1960, Wausau, Wisconsin, United States) is an American jazz and blues pianist, composer, arranger and producer who has made his home in Mosinee, Wisconsin.
Altenburgh studied music at the University of Wisconsin–Oshkosh.
He is the founder of Altenburgh Records distributed by The Orchard a division of Sony Entertainment and has recorded numerous albums as a solo artist and with his blues group, Johnny & The MoTones.