Lachhman Singh Gill (1917 – 26 April 1969) was an Indian politician who served as the 7th Chief Minister of Punjab.

He was a member of Shiromani Akali Dal(SAD), a Sikh-centered regional political party in Punjab.

Before joining politics he worked in the Punjab Works Department, Punjab, he also contracted many buildings in Delhi during the 1940s under the guidance of famed Sikh contractor and businessman, Sardar Bahadur Sir Sobha Singh.

[2] In the 1962 General Elections for Punjab Legislative Assembly he won from Jagraon constituency.

The major decision of Lachhman Singh Gill's government was to make Punjabi the official language of Punjab from 13 April 1968 onward.