Sigurður Guðjónsson is known for immersive installations that explore the materiality of time, sound, and motion. Focusing on overlooked industrial and elemental processes, he reveals the underlying rhythms and temporal structures of matter in transformation. Working with lens-based techniques, light, and spatial composition, Guðjónsson amplifies interaction between man-made machinery and natural forces. Sound is central to his practice, forming precise acoustic environments that anchor each installation and extend its perceptual field. Through the integration of image, sound, and space, he creates multilayered environments that heighten perception and foreground the dynamic behavior of material phenomena.

Sigurður Guðjónsson represented Iceland at the 59th International Venice Biennale in 2022 with his installation Perpetual Motion, curated by Mónica Bello. In 2018, he received the Icelandic Art Prize for Visual Artist of the Year for his exhibition Inlight, organized by the ASÍ Art Museum. His work has been presented in numerous solo and group exhibitions worldwide, including Francisco Carolinum, Linz, Austria; Wuhan Biennale, Wuhan; National Gallery of Iceland; Reykjavík Art Museum; Scandinavia House, New York; Frankfurter Kunstverein, Germany; Arario Gallery, Beijing; Liverpool Biennial, UK; Tromsø Center for Contemporary Art, Norway; and Hamburger Bahnhof, Berlin.

He is a professor in the MA program at the Department of Fine Art at the Iceland University of the Arts.