Kastenholz may refer to:
Bernd Kastenholz (born 1960), German research technologist and inventor, Alzheimer's researcher Christoph Kastenholz (born 1990), German entrepreneur, co-founder and CEO of Pulse Advertising Kastenholz, the German name for Cașolț, a village in Roșia, Sibiu, Romania
See also Ueli Kestenholz (1975–2026), Swiss snowboarder