O'Bryant Square is a small park and fountain at the cross streets of Southwest Park Avenue and Stark Street in downtown Portland, in the U.S. state of Oregon. The park is officially O'Bryant Square, but also known as Paranoid Park, Paranoia Park, "Needle Park", or "Crack Park". In 1971, the property was donated to the city by Mr. and Mrs. William E. Roberts, having once contained a quarter-block building and surface parking. Development of the park and underground parking cost $1.25 million, backed by federal grants and bonds built on the projected parking revenue. The park was popular in both the business and planning communities.
The park got its nickname from near-exclusive frequenting by street kids, users of illicit drugs, sex workers, and homeless people due to a Portland Police Bureau precinct office across Ninth Avenue from the Northwest corner of the park. In the 1980s, Paranoia Park served as a hub for punk activity, and is also one of Tri-Met's last bus stops in the immediate downtown hub. The square serves as common point between many areas of interest to specific audiences.
The park is the first open public space north, downhill, from the transportation and social center point of Portland, the Pioneer Courthouse Square. As a resting point, the park sits closely between many areas of interest to those in the street life, for example the Tri-Met transit mall, the east-west light rail service, the Portland Streetcar service, Powell's Books, and Burnside Street as well as Stark Street, home of Portland's The Roxy, which is open 24 hours most days.