Eileen Gail de Planque (also Eileen Gail de Planque Burke, best known as E. Gail de Planque; 1944 – September 8, 2010) was an American nuclear physicist. An expert on environmental radiation measurements, she was the first woman and first health physicist to become a Commissioner at the US government's Nuclear Regulatory Commission (NRC). Her technical areas of expertise included environmental radiation, nuclear facilities monitoring, personnel dosimetry, radiation shielding, radiation transport, and solid state dosimetry.