Sadhu Sundar Singh (Punjabi: ਸਾਧੂ ਸੁੰਦਰ ਸਿੰਘ, Urdu: سادھُو سُندر سنگھ; Hindi: साधु सुन्दर सिंह) (September 3, 1889 Patiala State, India) was an Indian Christian missionary. He is believed to have died in the foothills of the Himalayas in 1929.
Sadhu Sundar Singh (Punjabi: ਸਾਧੂ ਸੁੰਦਰ ਸਿੰਘ, Urdu: سادھُو سُندر سنگھ; Hindi: साधु सुन्दर सिंह) (September 3, 1889 Patiala State, India) was an Indian Christian missionary. He is believed to have died in the foothills of the Himalayas in 1929.