Jean-Philippe Ansermet (French: [ɑ̃.sɛʁ.mɛ]; born (1957-03-01)March 1, 1957) is a Swiss physicist and engineer and a professor at École Polytechnique Fédérale de Lausanne.

He then pursued a PhD at the University of Illinois at Urbana-Champaign, developing NMR spectroscopy for catalysis research and defending his thesis in 1985.

[3] He then continued his research on surface NMR as a postdoc at the same institution until 1987,[4] when he was named group leader for the Swiss chemical company Ciba-Geigy, working on composite materials and charge-transfer salts.

[7] The laboratory of Ansermet characterized giant magnetoresistance with current driven perpendicular to the interfaces of Co/Cu multilayers before large collaborations could achieve the same through lithography.

[11] The laboratory of Ansermet studies Dynamic Nuclear Polarization (DNP) as a way to enhance signals in surface-NMR experiments,[12] requiring excitation in the sub-THz domain.