The city flag of Portland, Oregon, consists of a green field on which is placed a white four-pointed star (a truncated hypocycloid) from which radiate blue stripes, each bordered by L-shaped yellow elements (esquarres).

Narrow white fimbriations separate the blue and yellow elements from each other and from the green background.

The original version of the flag was adopted on December 17, 1969, and included a dark blue canton featuring the city seal in yellow and white.

[2] The design was criticized for not including a rose (a traditional symbol of the city) or a depiction of Mount Hood; its abstract design was compared to "flags of Socialist countries" and a "fallen cross symbolizing the anti-Christ" by the organization Mothers for Children.

[3] Attempts were made to revise the flag to include a new rose shortly after the adoption.