Ypsilon is a cable-stayed bridge over Drammenselva in Drammen, Norway.
The pedestrian bridge connects Kunnskapsparken, the science park of Grønland in Drammen with the city park on Bragernes. The bridge was designed by the firm of Arne Eggen Architects. The bridge has been given the name "Ypsilon" due to its special form – from the air it looks like a Y, with one abutment on the Strømsø side and two at the Bragernes side. The project was co-funded by the municipality of Drammen and Kunnskapsparken AS. Kunnskapsparken accommodates the libraries of the Buskerud University College, the local branch of the Norwegian School of Management, the public library of Drammen, and the Buskerud Regional Library.