Thomas Sandell is a Swedish architect and designer, influential in shaping contemporary design in Sweden since the 90s. He was a founding professor of the Form program at Beckmans College of Design, alongside Jonas Bohlin.

His architectural work includes the Gåshaga Brygga housing development on Lidingö, the interiors for the Museum of Modern Art and the Museum of Architecture, both in Stockholm, and, together with Jonas Bohlin, the interior of Rolf's Kök, a Stockholm dining fixture for over three decades.

He has designed furniture for Asplund and Gärsnäs, among other manufacturers, including the Italian design house B&B Italia. His work has received the Utmärkt Svensk Form awardHis work has received "Utmärkt Svensk Form" (Excellent Swedish Design), Sweden's top design honor, eleven times, and the international Red Dot Design Award. He has also served as president of the Swedish Architects' national association, and his work is held in the permanent collection of Nationalmuseum in Stockholm.

Thomas Sandell