Thane Lok Sabha constituency (formerly, Thana Lok Sabha constituency) is one of the 48 Lok Sabha (parliamentary) constituencies of Maharashtra state in western India.

At present, after the implementation of the Presidential notification on delimitation on 19 February 2008, Thane Lok Sabha constituency comprises six Vidhan Sabha (legislative assembly) segments. These segments are:

In 1952 and 1957, this Thane area contributed two members to Lok Sabha.

In 2008, the Delimitation Commission of India split the seat into Thane and Kalyan seats.

19°13′N 72°59′E / 19.22°N 72.98°E / 19.22; 72.98