Bucknell's fraternities and sororities must be affiliated with a national or international organization and recognized by one of the following:
- National Multicultural Greek Council
- National Panhellenic Conference
- National Pan-Hellenic Council
- North American Interfraternity Conference
Participation in student groups that have had their recognition suspended or revoked (also known as "underground" groups) is strictly prohibited by the University. Anyone involved in an unrecognized group is subject to sanctions through the Student Code of Conduct. Charges could include failure to comply, providing false information or violation of institutional policy, regulations or procedures.