Renn Fayre is an annual celebration at Reed College in Portland, Oregon.

The Fayre commences with Thesis Parade, wherein graduating seniors embark on a symbolic march to deliver their theses to the registrar. It is three days long, running from Friday to Sunday. The Friday is the last day of regular classes for the spring semester. The following week is Reading Week, with no classes; the week after that, final examinations.

Essentially the whole campus goes crazy, with bizarre art installations, insect eating, motorized couches, naked people painting themselves blue, and a general sense of mayhem. Renn Fayre originated in the early 1970s as an actual rennaisance fair, but in later years lost its association with anachronism and became the tribute to crazy creative energy that it is today.