Kolkata Dakshin Lok Sabha constituency (earlier known as Calcutta South Lok Sabha constituency) is one of the 543 Lok Sabha (parliamentary) constituencies in India. The constituency centres on the southern part of Kolkata in West Bengal. While four of the seven legislative assembly segments on No. 23 Kolkata Dakshin Lok Sabha constituency are in Kolkata district, three are in South 24 Parganas district.
Considered to be a bastion of the Trinamool Congress, it has been won by the party since its formation in 1998. Prior to it, the seat was a stronghold of Indian National Congress. TMC's founder and current chief minister of West Bengal, Mamata Banerjee was the longest holder of the seat.
As per order of the Delimitation Commission in respect of the Delimitation of constituencies in the West Bengal, Kolkata Dakshin Lok Sabha constituency is composed of the following legislative assembly segments from 2009:
^By-Poll
A bye election was held in this constituency in 2011 which was necessitated by the resignation of sitting MP Mamata Banerjee and her subsequent election to the State Assembly from the Bhabanipur Assembly constituency. In the by-election, Subrata Bakshi of Trinamool Congress defeated his nearest rival Ritabrata Banerjee of CPI(M) by 2,30,099 votes.
Calcutta South constituency came into existence in 1967. However, different constituencies existed in the area. Results of such constituencies are also included here. Most of the contests were multi-cornered. However, only winners and runners-up are mentioned below: