A pledge pin is a common custom of United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 fraternities and sororities

Fraternities and sororities

Fraternities and sororities are fraternal social organizations for undergraduate students. In Latin, the term refers mainly to such organizations at colleges and universities in the United States, although it is also applied to analogous European groups also known as corporations...

 in which a pin is worn by pledges for the duration of the pledging period, usually during all times not considered dangerous to do so (during sports, etc.). In the context of fraternities and sororities, the Phi Beta Kappa society founded on December 5, 1776 was the first. This organization's earliest emblem of recognition was a silver square medal with the initials S.P. and the date December 5, 1776 engraved on the one side, with the Greek letters ΦβΚ (Phi Beta Kappa) engraved on the other side. This emblem from the first "American Greek" organization would be the first use of an emblem in identifying a member of the organization.

A pledge pin is usually given to a pledge (a new member) when they are first offered membership in a fraternity or sorority. It may be given to them following a ceremony and can be worn until their initiation in which they become a full member.

In some greek systems on University campuses, pledge pins may commonly be the target of informal 'theft' from other fraternities and sororities of the opposite sex as a means of promoting interaction between each other on campus.

Exceptions

Some fraternities, such as Sigma Phi Epsilon

Sigma Phi Epsilon

Sigma Phi Epsilon , commonly nicknamed SigEp or SPE, is a social college fraternity for male college students in the United States. It was founded on November 1, 1901, at Richmond College , and its national headquarters remains in Richmond, Virginia. It was founded on three principles: Virtue,...

 and Lambda Chi Alpha

Lambda Chi Alpha

Lambda Chi Alpha is one of the largest men's secret general fraternities in North America, having initiated more than 280,000 members and held chapters at more than 300 universities. It is a member of the North-American Interfraternity Conference and was founded by Warren A. Cole, while he was a...

, no longer have a strict "pledging process;" rather they have "new membership" or "associate membership" levels. These new members are generally still endowed with a pin, though often referred to as "new member pins" instead of "pledge pins."

Member organizations of the National Panhellenic Conference (NPC) do not use the word "pledge," but instead say "new member." New members are not required to wear their pins at all times but are asked to wear them when active members wear their membership pins. This is usually limited to formal meetings and ritual ceremonies.