Townsville Street Circuit, motorsport circuit in Townsville, Australia

Townsville Street Circuit is a motorsport racing track in Reid Park, Townsville, Queensland, spanning roughly 3 kilometers and winding through city and parkland streets. About 70 percent of the track consists of specially constructed roads featuring a mix of fast straights, sharp turns, and technical sections that weave between trees and green areas of the park.

The circuit opened in 2009 with the Dunlop Townsville 400, held from 10 to 12 July. Queensland's sports minister Judy Spence announced in July 2008 that the state government would contribute $2.5 million annually for the event's first five years. In 2014 the format changed to a 500-kilometre event split into two 250-kilometre races. Parts of the track flooded in February 2019.

The circuit takes its name from Reid Park, the public parkland it runs through, not from a person. Its permanent pit building and much of the park infrastructure stay in place all year and host other events outside race week. The Townsville 500 is held each July, with support categories such as Touring Car Masters and Aussie Racing Cars on the same programme.

The circuit runs through Reid Park beside Townsville State High School and the Civic Theatre, crossing Ross Creek several times and passing Townsville railway station. Five viewing mounds and grandstands seat about 12,000. The pit building and much of the park infrastructure are permanent and used year-round for other events.

About 70 percent of the track consists of specially built roads, setting it apart from permanent racing circuits. This construction creates a mix of smooth and rough surfaces that challenge drivers with varying grip conditions and makes the course technically demanding in ways that standard permanent tracks cannot replicate.