Uroboros, Sculpture in Portland, Oregon

Uroboros is a 1979 cast concrete sculpture by Charles Kibby in Westmoreland Park, Sellwood, southeast Portland. It depicts the uroboros, a serpent or dragon eating its own tail. The Regional Arts & Culture Council lists it as 48 by 14 by 72 inches (120 x 36 x 180 cm) on a 24 by 20 by 20 inch base; the Smithsonian gives 45 by 45 by 16 inches on a base about 21 by 20 by 16 inches.

The work was created in 1979 by artist Charles Kibby using cast concrete and was part of a public art funding program between 1979 and 1980. It was later donated to the park as a permanent addition to Portland's public art collection.

The title refers to the uroboros, the Egyptian and Greek symbol of a serpent or dragon eating its own tail. The Regional Arts & Culture Council administers the piece as part of the City of Portland and Multnomah County Public Art Collection, so it is catalogued public art rather than a park ornament.

The sculpture is located in Westmoreland Park in the Sellwood neighborhood of southeast Portland and is easily accessible to pedestrians and families. The park setting allows visitors to explore and view the geometric form from different angles.

The Smithsonian Institution catalogues Uroboros as abstract "geometric" work and records that it was commissioned through the Comprehensive Employment and Training Act (CETA) before being donated to Westmoreland Park. The two institutions that document it disagree on size: the Regional Arts & Culture Council gives 48 x 14 x 72 inches, the Smithsonian 45 x 45 x 16 inches.