Justice Gurnam Singh (22 February 1899 – 31 May 1973, Delhi) was an Indian politician and the Chief Minister of Punjab from March 8, 1967 to November 25, 1967, and again between February 17, 1969 to March 27, 1970. Justice Gurnam Singh was a Grewal Jat Sikh.He had 2 sons-Sukhbir Singh and Gurbir Singh.Sukhbir Singh has 2 sons namely Shivbir Singh and Ravibir Singh.Ravibir Singh has 1 son Sabir and 1 daughter Isha.Shivbir Singh has 1 daughter Mehr and a son named Kabir. He was the first Shiromani Akali Dal Chief minister of Punjab. His ministry fell due to defection of Lachhman Singh Gill, who became the next Chief Minister with the support of the Indian National Congress. He died in an air crash in Delhi on 31 May 1973.