Acácio Viegas (Portugal, 1976) is a Portuguese contemporary artist, designer, researcher, and lecturer whose practice investigates the relationship between geometry, perception, and consciousness.

Working across sculpture, painting, installation, and digital fabrication, he explores how visual structures shape the ways we construct meaning and experience reality. His work combines geometric abstraction with contemporary technologies and manual processes, creating works that exist at the intersection of material precision and perceptual inquiry.

Originally trained in Product Design, Viegas holds a Master's degree in Industrial Design and is a lecturer at the Polytechnic University of Viana do Castelo (UNIIPVC), where he teaches Product Design, Environmental Design, and Graphic Design. This dual engagement with academia and artistic practice underpins a research methodology in which making becomes a form of critical inquiry.

His work has been exhibited in solo and group exhibitions, international biennials, and public art commissions, receiving both national and international recognition. In 2025, he was awarded the First Prize at the XV Eixo Atlântico International Art Biennial, following the Henrique Silva Art Prize in 2024. His practice continues to evolve through artistic research, positioning art as a method of investigating perception and the construction of meaning.

Rather than producing objects as ends in themselves, Viegas approaches each work as an open inquiry into perception, consciousness, and the invisible structures through which we experience the world.

He lives and works in Viana do Castelo, Portugal.