He was 94.
Singh's son, Chaudhary Rudrasen said that his father was admitted to Delhi's Escorts hospital due to some respiratory problems about a month and half ago.
He breathed his last at 11 pm yesterday.
The body of the former national vice president of SP has been kept at his home at Titro for public to pay their last respect.
In 1977, when he was in the Congress, he was the only leader from the party to win a MLA seat in the entire Meerut-Saharanpur division.
He was also at the forefront when Indira Gandhi relaunched her comeback campaign after the 1977 drubbing.
Singh is survived by his two sons.