Heidenstam or von Heidenstam is a surname. Notable people with the surname include: Gustaf von Heidenstam (1822–1887), Swedish engineer. Verner von Heidenstam (1859–1940), Swedish poet and novelist. Hugo von Heidenstam (1884–1966), Swedish diplomat and engineer. Oscar Heidenstam (1911–1991), Cyprus-born British bodybuilder https://en.wikipedia.org/wiki/Heidenstam