Brothers in Unity (formally, the Society of Brothers in Unity) is an undergraduate literary and debating society at Yale University. Founded in 1768 as a literary and debating society that encompassed nearly half the student body at its 19th-century peak, the group disbanded in the late 1870s after donating its collection of books to help form Yale's central library.
It was revived in 2021 as a literary and debating society by members of the senior class and alumni. Unlike other Yale senior societies, Brothers in Unity admits students from all four undergraduate years.