The Indian Secular Front (abbreviation: ISF) officially known as All India Secular Front is an Indian political party formed in West Bengal by Abbas Siddiqui, an influential cleric of the shrine of Furfura Sharif in Hooghly district.

[1] This party was formed ahead of the West Bengal Assembly election of 2021[2] and joined the Sanjukta Morcha,[3] led by the Left Front and the Indian National Congress[3] against the Trinamool Congress and the Bharatiya Janata Party.

After the election, Adhir Ranjan Chowdhury, the head of West Bengal Congress, declared an end to the alliance with Indian Secular Front.

[6] For the 2021 West Bengal Legislative Assembly election, the ISF allied with the Communist Party of India (Marxist) and Indian National Congress in an alliance named Sanjukta Morcha.

Prior to the 2021 West Bengal Legislative Assembly elections, bombs and guns were recovered by the police from the residence of Ziarul Mollah, a party worker.