Pi Delta Psi (ΠΔΨ) is an Asian American-interest cultural fraternity founded at Binghamton University on February 20, 1994.

Thus in 1999, it was decided by the National Council to restructure itself in an effort to grow in proportion to the fraternity's expansion rate, standardize chapters nationwide, and increase inter-chapter cohesion.

After 25 years, Pi Delta Psi expanded to 31 campuses spanning fourteen states, including California, Colorado, Connecticut, Florida, Georgia, Maryland, Massachusetts, Minnesota, New Jersey, New York, Ohio, Pennsylvania, Virginia, and Washington, D.C.[3] Pi Delta Psi and its members seek to bring about Asian-American unity by breaking down cultural barriers amongst Asian communities by upholding and/or instilling the fraternity's pillars: academic achievement, cultural awareness, righteousness, friendship, and loyalty.

Pi Delta Psi's mission statement also advocates an increase in education and awareness of Asian cultures as a means of overcoming racism.

The Winter Conference is a daylong leadership retreat where the National Executive Board meets and discusses relevant fraternity issues with representatives from each undergraduate chapter.

The National Summer BBQ is normally held at Alley Pond Park in Queens, New York, and includes sporting events and chapter fundraising activities.

[7][8][9] The March of Dimes was named as the national philanthropy of Pi Delta Psi for 2009; the fraternity remains an official team youth partner.

[11] On December 8, 2013, prospective member Chun Hsien "Michael" Deng died from brain trauma due to hazing during a pledge event held by the Baruch College chapter at a rented house in the Pocono Mountains in Tunkhannock Township, Monroe County, Pennsylvania.

backpacks filled with sand while members of the fraternity tackled them and delivered repeated blows to their heads and bodies (known as “spearing”), in three stages lasting approximately 25 minutes each.

His fraternity brothers failed to call for emergency help, instead dragging Deng inside, changing his clothes, and attempting to cover up the incident.

Andy Meng, the former National Executive President for Pi Delta Psi initially published a statement claiming that the incident happened during "an unsanctioned event that was strictly prohibited by our organization."

[citation needed] After investigating the incident,[15] the National Pi Delta Psi fraternity revoked its affiliation with the Baruch chapter.

[16] In February 2014, Deng’s death was ruled a homicide, and the Monroe County district attorney stated that they expected to file charges after their investigation was completed.

[19] The Monroe County District Attorney’s Office brought charges against the individual defendants in various stages and according to their culpability for Deng’s death.

[20] Kenny Kwan, Charles Lai, Raymond Lam, Sam Liao, and Sheldon Wong were each charged with third-degree murder.