Phi Gamma Delta is a social fraternity with more than 153 active chapters and 13 colonies across the United States and Canada. It was founded at Jefferson College, Pennsylvania, in 1848. Since its founding, the fraternity has initiated more than 170,000 brothers.

The nickname FIJI is commonly used by the fraternity, as we hold our Greek letters sacred, and as such, limit their use.

Phi Gamma Delta has chosen not to use the term alumni for members who have graduated; post collegiate members are referred to as Graduate Brothers, to imply that membership extends past the undergraduate experience. Similarly, one of the mottos used by the organization is, "Not For College Days Alone".

Phi Gamma Delta's mission statement lists five core values for its members:
  • Friendship
  • Knowledge
  • Service¬†
  • Morality¬†
  • Excellence

In addition, members are encouraged to live by three priorities in a specific order: scholarship, fraternity, and, self.

This ordering is because members attend university with the foremost goal of receiving an education, and Phi Gamma Delta is a fraternity that promotes scholastic achievement amongst its members.