Pierre Wiltzius ((1952-05-13)May 13, 1952 Luxembourg - ) is a physicist, the Executive Dean of the College of Letters and Science and Susan & Bruce Worster Dean of Science at the University of California, Santa Barbara and an Elected Fellow of the American Physical Society and of the American Association for the Advancement of Science (Engineering, 1999).
His research has varied from photonic crystals and new fabrication techniques such as multi-beam interference lithography and colloidal self-assembly, complex fluids and soft condensed matter, resulting in high citations of 1310, 771 and 537, two of them consistently published by Nature.