Two vehicles collided head on between Patorpratima and Kagdeep following which one fell into a road side pond, police said.
Two women, teachers of a child education centre, died on the spot while ten others were injured.
They have been rushed to Kagdeep civil hospital and Diamond Harbour hospital.
In another incident at Maheshtala, a student Sheikh Haidar, accidentally fell from a multi storeyed building and died.