Bhai Balu Hasna (13 November 1564 – 2 December 1660) was a Sikh preacher and leader of a branch of the Udasi sampradaya.
Balu Hasna was born on 13 November 1564, in a Gaur Brahmin family of Srinagar (Kashmir) to Pandit Hardatt and Mai Prabha.
Initially named Balu, he travelled with his elder brother Alu, also known as Bhai Almast, to receive teachings from Guru Arjan in Amritsar in 1604.
Baba Gurditta assigned him the task of preaching Sikhism in the Pothohar region for the remainder of his life.
Udho Das, another of Bhai Balu Hasna's followers, served Mata Panjab Kaur, the widow of Baba Ram Rai at Dehra Dun after her death in April 1741, and succeeded her, constructing a Samadhi or Mausoleum honouring Bhai Balu Hasna at Dehra Dun.