BHAI SATI DAS (d. 24 November 1675), (Punjabi: ਭਾਈ ਸਤੀ ਦਾਸ) was the second martyr who was executed in direct sight of Guru Tegh Bahadur in November 1675. He was the younger brother of Diwan Mati Das. According to Bhatt Vahl Talauda he served Guru Tegh Bahadur as a cook.