Per Arne Ivar Lundahl-Terrs (1939–2025) was a Swedish silversmith, designer, graphic artist and balloonist. He studied at the Kunst- und Werkschule in Pforzheim, Germany, at Konstfack in Stockholm, and at the Academy of Fine Arts in Kraków, Poland. After completing his studies he worked as artistic director of Terrs in Växjö. His public commissions include church silver and decorations for Gustav Vasa Church in Stockholm and Växjö Cathedral, as well as a wall mobile for Norrängen Hospital in Växjö. During the 1960s he collaborated on several projects with designer Mona Morales-Schildt. His work is represented in the collections of the Nationalmuseum, Stockholm, and in Pforzheim, Germany.