Pentagon Design is an industrial design agency founded by industrial designers Arni Aromaa and Sauli Suomela in 1996 in Helsinki. The agency is focusing on consumer products and services.

Pentagon Design operates by combining rationality and passion. Their creative work always stems from a profound understanding on the client's business and objectives. One of the recent recognition is the red dot award in autumn 2005 for the Hot & Cool - The New Urban Sauna concept.