Hope A. Ishii is an American scientist and the Director of the Advanced Electron Microscopy Center at the Hawai'i Institute of Geophysics and Planetology (HIGP) at the University of Hawaiʻi. Her work focuses on analysis and characterization of small solar system objects such as comet and asteroid dust, primarily by means of electron microscopy and x-ray spectroscopy, sometime from samples collected in space using aerogel. She is a research faculty member at the University of Hawaiʻi at Mānoa, and an affiliate researcher at Lawrence Berkeley National Laboratory.