Sigma Pi International


Sigma Pi Fraternity was founded in 1897 at Vincennes University, in Vincennes, Indiana. Our Executive Office is located in Lebanon, Tennessee. The Fraternity is one of the top men’s collegiate organizations in North America, with more than 120 active chapters and colonies in the United States and Canada. With over 100,000 alumni and 5,300 undergraduates; our men strive for excellence by living our core values to promote fellowship, develop character and leadership, advance heightened moral awareness, enable academic achievement, and inspire service. Sigma Pi is the only Greek letter organization with an international service program, The ACE Project, specifically designed to give back to our host institutions.

Sigma Pi Sigma Chapter at Iowa State University


Sigma Pi was founded at Iowa State University in 1922 (inactive 1943–1955 and 1974–1991). Today, Sigma Chapter has over 100 members and is a leading fraternity with with a vision to advance man’s quest for excellence.



Sigma Pi supports the Amazing Day Foundation.  The foundation is a nonprofit organization dedicated to raising funds to create awareness and reduce the suicides of college students.

Sigma Pi also has partnered with Donate Life America to encourage all members to register or reaffirm their decision to save lives through organ and tissue donation and to encourage all people they come in contact with to do the same.

Community Service


Sigma Pi participates in community service to give back to the city of Ames and the greater community. Such events that we have participated in in the past include: CyServe, Marsten Water Tower cleanup and donating items to to various charities. Sigma Chapter is proud to have adopted a highway that is cleaned up every semester to help keep Ames beautiful.

ACE Project



Sigma Pi is the only Greek letter organization with an international service program, The ACE Project, specifically designed to give back to our host institutions. Sigma Chapter in recent years has done Random Acts of Kindness Week (RAK Week). RAK Week has the goal to give back to Iowa State’s campus which has given Sigma Chapter so much. For RAK Week we have given back by providing snacks to ISU’s administration, Inter-Fraternal Council, and Collegiate Panhellenic Council. We also have written positive messages to students for students to find on their desk unexpectedly to wish them luck on finals. We have also given out free ice cream to students during finals week to brighten their day. In previous years we have helped to clean up the on-campus daycare center.




Sigma Pi participates in homecoming events with all of the Greek Community including Yell Like Hell and ExCYtement in the Streets.

Greek Week


Sigma Pi participates in all events in Greek Week including dingle dangle  donut, bed racer, dizzy duck, LARPing, VESPER awards and lip sync.



Brotherhood is an important aspect of social excellence for Sigma Pi. There are many brotherhood events including: annual football games, brotherhood bonfires, holiday events, sports and camping.



We participate in many different intramurals including flag football, softball, ultimate frisbee, volleyball, basketball, dodge ball and more.



Sigma Pi has fun and creative socials with other organizations including water balloon wars, paper airplane contests, sand volleyball tournaments and pumpkin carving contests.