Tyréns is a Swedish foundation-owned consulting firm in the built environment, founded in 1942 by Sven Tyrén and headquartered in Stockholm. Tyréns Sverige AB delivers infrastructure, urban planning, building services and sustainability advice across Sweden, as part of a group of roughly 3,000 people in Sweden, the UK, Baltics, Poland, Bulgaria and Canada. The Sweden company is led by CEO Cecilia Granath.