Darcelle XV Plaza

Darcelle XV Plaza
Park signage in 2014
LocationSW Park Ave. and Washington St.
Portland, Oregon, U.S.
Coordinates45°31′17″N 122°40′48″W / 45.521435°N 122.679918°W / 45.521435; -122.679918
Area0.46 acres (0.19 ha)
Created1973
Operated byPortland Parks & Recreation

Darcelle XV Plaza (formerly O'Bryant Square) is a square that was a small park and fountain at the intersection of Southwest Park Avenue and Southwest Harvey Milk Street in downtown Portland, Oregon, in the United States. It received the current name in July 2023. Previously, the park was named after Hugh O'Bryant, Portland's first mayor.

The park has also been known as "Paranoid Park", "Paranoia Park", "Needle Park", and "Crack Park". Aaron Mesh, writing for Willamette Week on an article discussing plans for a park space in Northwest District described city's reluctance to commit to a plaza because "junkie haven O'Bryant Square, or "Paranoid Park"—have been a security hassle."