Purpose: A student-specific definition of basic needs for higher education is warranted to inform programs and policies for underserved students. The purpose of this study was to: 1) explore how students define basic needs, 2) understand experiences of housing insecurity, and 3) understand experiences of food insecurity within the context of housing insecurity. Design: Qualitative research elicited student perceptions of basic needs and experiences of housing and food insecurity. Setting: Focus group discussions were conducted at 5 University of California campuses between February and March 2019. Participants: Undergraduate (n = 37) and graduate (n = 21) students were recruited from campus basic needs centers. Methods: Each student completed a brief survey. Researchers conducted 11 focus groups using a semi-structured interview guide. Transcripts were coded to identify themes. Results: Students were female (76%), age 23.6 (SD = 5.8) years; 46% were Pell grant recipients; and 52% were first-generation college students. Most had experienced food insecurity (98%) and 26% had experienced homelessness. Eight themes were identified: 1) students define basic needs as more than minimal food and shelter and as the responsibility of students and the university, 2) students encounter multifaceted housing insecurity issues, 3) affording rent is a priority that most often leads to experiencing food insecurity, 4) transportation barriers interfere with meeting students’ basic needs to succeed as students, 5) students with nontraditional characteristics, graduate students, and out-of-state students face unique challenges in meeting basic needs, 6) limited financial aid and lack of financial aid guidance are barriers to meeting basic needs, 7) fees contribute additional challenges to students meeting basic needs, and 8) additional university basic needs services are essential. Conclusion: A student-informed definition of basic needs included food, housing, mental health, sleep, hygiene, and transportation. This understanding of basic needs can inform future research, programs, and policy to address housing insecurity in higher education.