Ximena Cid is a Chicana and Indigenous American physicist; physics educator and physics education researcher; and advocate for increasing diversity and supporting minority students in STEM and physics. She is currently associate professor and past chair of the physics department at California State University Dominguez Hills. She is recognized as the first Latina student, as well as the first Indigenous student, to earn a PhD in physics from the University of Texas at Arlington. She is also recognized as likely the first Indigenous person to chair a physics department in the country. One of her research specialties is 3-D simulations to support the comprehension of systems such as gravitational fields, electric fields and magnetic fields.