Westfield Tea Tree Plaza is a large shopping centre located in Modbury serving as a shopping hub for Adelaide's growing north eastern suburbs, it is linked to the city by Adelaide's O-Bahn Busway, which terminates at the Tea Tree Plaza Interchange.

Major tenants include Myer, Harris Scarfe, Target, Kmart, Big W, Woolworths, Coles, Aldi and Hoyts.

With 245 stores, Tea Tree Plaza is the second largest shopping centre in Adelaide, only Westfield Marion is larger.

[1] Located in the City of Tea Tree Gully, it is the major shopping hub for the north-east of Adelaide.

[2][3] A major A$190 million expansion announced in 2006, to incorporate Tea Tree Plus and add about 95 new stores and a four-storey car park has been put on hold.