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The Sydney Business Chamber, established in 1825 as the Sydney Chamber of Commerce, is the second-oldest business entity in New South Wales. Today, it is a division of the NSW Business Chamber and a partner of Business Events Sydney.

Its membership is drawn from the city's corporate business community, covering all industry sectors and representing leading corporations across Greater Sydney. With offices in the Sydney central business district and Parramatta, it provides a voice for the corporate community and advocates on various issues. Members also have access to high-level networking events to discuss key issues and meet potential clients, suppliers, partners, and competitors. ^{[citation needed]}

The Chamber's mission is to represent leading corporations across Greater Sydney and advocate for public policies that enhance Sydney as a competitive, collaborative, and livable global city through collaboration with government or advocacy for government.^[1]

As an advocate for Sydney as a competitive and livable global city, the Chamber makes policies focused on reforming the city's local governance, urban renewal and planning reform, recycling state assets to fund new transport and infrastructure projects, and supporting the evolution of Sydney as a leading service economy with a strong reputation in the arts, tourism, and international education. Headed by Katherine O'Regan as executive director,^[2] the Sydney Business Chamber is a key player in shaping government policy and has worked hard to enhance Sydney as a city that attracts global investment and global talent. ^{[citation needed]}

The Business Chamber developed Sydney to be connected, productive, and livable,^{[citation needed]} to identify priorities and actions needed to lift Sydney's international status as a global destination for business and leisure as well as positioning Western Sydney as a new economic powerhouse,^{[citation needed]} whilst having a strong focus on the benefits of the Western Sydney Airport as it may help the city's economy, and reshape Western Sydney as a place to live, work, study, visit, and play.^{[citation needed]}

Since 2012, The Chamber's efforts in Western Sydney, under the leadership of David Borger, have focused on advocating ideas to grow economic opportunities across the region to stimulate existing businesses and attract new ones.^{[citation needed]} Central to its advocacy was its successful campaign for the Badgerys Creek site to be named by the Federal Government, with support from the Opposition and NSW governments, as the site of Sydney's second airport.^{[citation needed]}