is a North American professional fraternity composed of pre-law and law students, legal educators, attorneys, judges, and government officials.

Formed in Chicago in 1887 their short-lived predecessor Lambda Epsilon informally served law students until November 8, 1902, when the group was reorganized into Phi Alpha Delta at a meeting in South Haven, Michigan.

[3][4] Phi Alpha Delta was founded to promote professional competency and achievement within the legal profession.

was the first law fraternity to admit members of all races, creeds, colors, religions, and national origins.

[11] The motto of Pi Alpha Delta is "Philos Adelphos Dikaios" or "Love of Humanity and Justice for All".

is the only law fraternity to receive federal funding from the U.S. Department of Justice for its Law-Related Education program.

For organizational purposes, the fraternity is geographically divided into 33 districts covering North America.