Baron Hermann Ludwig Ferdinand von Helmholtz wani likitan Jamus ne kuma masanin kimiyyar lissafi wanda ya rayu daga 1821 zuwa 1894. An fi saninsa da aikinsa a fannin ilimin halittar jiki da na gani, da kuma gudummawar da ya bayar wajen nazarin thermodynamics da electromagnetism. Babban gudunmawar Helmholtz ga kimiyya sun haɗa da tsara dokar kiyaye makamashi, ƙirƙira na ophthalmoscope, da gano abubuwan da ke motsa jijiya. Har ila yau, ya kasance fitaccen mutum a cikin ci gaban ilimin kimiyya da cibiyoyin bincike na Jamus. An ba shi lakabin "Baron" don sanin nasarorin kimiyya.