Harvard University and Yale University in the USA, and Oxford University, Cambridge University and Dublin University in Britain & Ireland, have a tradition of pairing their respective residential colleges or Houses with one another. Colleges that are paired are referred to as sister colleges, and have a ceremonial and symbolic relationship to one another. Students at one college can often find accommodation at their sister college should they be visiting the other University; this is especially relevant to Harvard and Yale students during the annual Game.
- Harvard-Yale sister colleges
- List of Oxbridge sister colleges
- Seven Sisters (colleges), a group of American women's colleges