Dipoli (Finnish for dipole) is a conference center located in Otaniemi, Espoo, Finland as a part of the campus of the Helsinki University of Technology (TKK).
When the TKK moved from Helsinki to Espoo in the early 1960s, a design contest was held for what would become the new building for the Student Union of Helsinki University of Technology. The contest was won by Reima and Raili Pietilä, and their 1961 design was used as the blueprint for the Dipoli building. Work began in 1965, and the building was ready for use in the fall of 1966. The name is a pun; it can mean dipole, but also "the second Poli", the second building of the polytechnic students
In 1993 the building was transformed into a training centre of the university due to high maintenance costs. Besides its primary role, Dipoli is still regularly used for conventions, congresses and student parties. The building houses over 20 conference rooms and auditoriums.