A fraternity is an organisation of men.

Fraternity may also refer to:

• Benefit society
• Chivalric order
• Fraternal order
• Friendly society
• Honor society, an organization which recognizes achievement
• Religious order
• Secret society
• Social club
• Trade union

• Corporation (university), college fraternity; for example German Student Corps
• Nation (university), student organization
• Studentenverbindung, student organizations in Germany
• Student society
• Students' union

• College fraternities and sororities, also called Greek letter organizations or social fraternities, initiatory organizations which unite students through the undergraduate college course
• Collegiate secret societies in North America, organizations in which membership is limited by year of study
• Literary society, an organization formed as a student-directed supplement to the academic curriculum
• Professional fraternities and sororities, organizations which promote fellowship among those in a particular academic discipline or career field
• Service fraternities and sororities, organizations whose primary purpose is community service

• Fraternity (philosophy), a type of relationship between people

• Fraternity (band), an Australian rock group from the early 1970s, featuring AC/DC's Bon Scott
• Fraternity Records, a record label

• List of general fraternities
• List of social fraternities
• List of social sororities and women's fraternities
• North American fraternity and sorority housing, large group housing for members of a fraternity or sorority
• All pages with titles containing fraternities
• All pages with titles containing fraternity
• Brotherhood (disambiguation)