An interdenominational church is a worship space which is open to the use of any Christian denomination, or which is shared by more than two denominations. This type of church differs from a non-denominational church, which is also not tied to an established denomination, but which generally admits to a certain consistent religious point of view.

University chapels and other public worship spaces are very often classified as interdenominational churches.

The distinction concerns access and shared use across denominations. A congregation can welcome individual visitors from other churches while retaining its own denominational worship; that welcome alone does not establish the interdenominational use described here.