Krier is a surname. Notable people with the surname include:
Andrew W.K. (born 1979), American singer, multi-instrumentalist, songwriter, record producer Antoine Krier (1897–1983), Luxembourgish politician Cyndi Taylor Krier (born 1950), American politician Herman Krier, American engineer Jacques Krier (1926–2008), French television producer and director, novelist James E. Krier, American legal scholar Léon Krier (1946–2025), Luxembourgish architect, city planner and author; brother of Rob Pierre Krier (1885–1947), Luxembourgish politician Rob Krier (1938–2023), Luxembourgish architect, city planner and author; brother of Léon Tony Krier (1906–1994), Luxembourgish photographer