This is a list of the players who have made the most appearances in men's rugby union test matches, listing the players with 110 or more caps.
The British and Irish Lions and Pacific Islanders are recognised as test teams, although they represent a group of national unions. Some national teams have granted test caps for some matches against teams such as the Barbarians, an invitational club team; these are included only if the union granted test caps for a particular match.