The Full Form of UCAS is Universities and Colleges Admissions Service.

The Universities and Colleges Admissions Service (UCAS /ˈjuːkæs/) is a UK-based organisation whose main role is to operate the application process for British universities. It operates as an independent charity, funded by fees charged to applicants and to universities, plus advertising income, and was formed in 1992 through the merger of the former university admissions system UCCA and the former polytechnics admissions system PCAS.

Services provided by UCAS include several online application portals, a number of search tools and free information and advice directed at various audiences, including students considering higher education, students with pending applications to higher education institutes, parents and legal guardians of applicants, school and further education college staff involved in helping students apply and providers of higher education (universities and HE colleges).