Educated in Lahore, Kavishar began his public career in 1913, when he launched the English-language newspaper Sikh Review.
This led to widespread Sikh agitation until the outbreak of the First World War, at which point that particular issue was considered to be of lessened priority.
In 1921, he issued a public call for 100 Sikh volunteers to rebuild the gurdwara's demolished wall, at the cost of their lives if need be.
In 1935, he openly opposed the Congress's participation in the Government of India Act, and in 1937 chose to resign his membership in the party after they accepted office in the provinces where they had earned a majority.
When the All India Forward Bloc split in 1948, soon after it had been reorganized, Sardul Singh Kavishar sided with the anti-Marxist group led by R.S.