The Division of Lalor (/lɔːlər/ LAW-lər) is an Australian Electoral Division in the state of Victoria. Located in the south-western suburbs of Melbourne in the City of Wyndham, it includes the south-western hub of Werribee as well as the suburbs of Hoppers Crossing, Tarneit, Truganina, Wyndham Vale and part of Point Cook.
At 9.0%, Lalor has the nation's highest proportion of children aged under 4 years old. It has the nation's lowest proportion of residents aged 65 and over (7.0%), is sixth highest nationally for families being couples with dependent children (44.4%), and has the sixth highest rate of residents purchasing their own homes (49.3%).