Left Front is a front of Indian leftist parties. In West Bengal and Tripura there are state-level committees of the Left Front. Left Front governments rule both states.

In West Bengal the following parties are part of LF

• Communist Party of India (Marxist)
• Communist Party of India
• Revolutionary Socialist Party
• All India Forward Bloc
• Revolutionary Communist Party of India
• Marxist Forward Bloc
• West Bengal Socialist Party
• Democratic Socialist Party
• Biplobi Bangla Congress

Communist Revolutionary League of India was a member of the Bengali LF between 1995 and 2000.

The convenor of the West Bengal Left Front committee is Biman Bose, polit bureau member of CPI(M).

In Tripura CPI(M), CPI, RSP and AIFB are members of Left Front.