Bossley Park is a suburb of Sydney, in the state of New South Wales, Australia. It is located 28 kilometres west of the Sydney central business district, in the local government area of the City of Fairfield. Bossley Park is part of the Greater Western Sydney region.

The suburb is mostly residential, with some commercial and industrial areas. It is bordered by Abbotsbury, Edensor Park, Greenfield Park, Prairiewood, and Wetherill Park. The main road through the suburb is Bossley Road, which runs from Abbotsbury to Wetherill Park.

The suburb is home to a number of parks and reserves, including Bossley Park Reserve, Bossley Park Wetlands, and Bossley Park Golf Course. There are also a number of schools in the area, including Bossley Park High School, Bossley Park Public School, and St John’s Primary School.

The nearest train station is Fairfield Station, which is located on the T1 Western Line. The nearest major shopping centre is Stockland Wetherill Park, which is located just outside the suburb.