Top undergraduate universities for a major in cosmology, excluding Ivy League institutions, often do not offer a dedicated cosmology major. Instead, a strong foundation in physics and mathematics is essential, with specialization occurring at the graduate level. The reputation of the undergraduate institution is less critical than the quality of its physics program. Students should seek universities with active cosmology research groups, as hands-on experience and research opportunities are vital for building a competitive CV for graduate school applications. Institutions like UC Irvine, which has a Center for Cosmology, exemplify this approach, providing access to faculty engaged in cosmological research. The focus should be on selecting a university with a robust physics program and faculty involved in cosmology or related fields.