Theo Galliakis (b. Crete, Greece – 1994) is an architect and designer, currently working between Greece and France.

Galliakis holds a Master's degree in Architecture from Aristotle University of Thessaloniki and a second Master's degree in Geo-Design from Design Academy Eindhoven.

His work spans from objects and furniture to spaces and installations. Galliakis's practice is conceptually driven, exploring concepts of spirituality, material transformation, and simplicity.