Xaveer De Geyter (born 1957) is a Belgian architect.
De Geyter was born in Doornik, Belgium.
He spent ten years at office for metropolitan architecture with Rem Koolhaas, where he worked on projects such as the Villa dall'ava in Paris, "urban design, melun sénart paris", the sea terminal in Zeebrugge, the zkm centre for art & media technology in Karlsruhe and two libraries for Jussieu University, Paris.
De Geyter started his own firm in the early 1990s and built two private villas in Belgium.
Early designs such as the Ilot Saint Maurice in Lille and the Chassé Apartment towers, Breda, exemplify his capacity for innovative architectural design. In 2001, a second office opened in Ghent, in collaboration with Stéphane Beel.