Pi Tau Sigma is an international honor society for mechanical engineering. It was established in 1915 at the University of Illinois. In the following chapter list, active chapters are indicated in bold and inactive chapters and institutions are in italics.
ChapterCharter dateInstitutionLocationStatusIllinois AlphaUniversity of Illinois Urbana-ChampaignUrbana, IllinoisActiveWisconsin AlphaUniversity of Wisconsin–MadisonMadison, WisconsinActivePurdue BetaPurdue UniversityWest Lafayette, IndianaActiveMinnesota GammaUniversity of MinnesotaMinneapolis, MinnesotaActiveIllinois Tech DeltaIllinois Institute of TechnologyChicago, IllinoisInactiveMissouri EpsilonUniversity of MissouriColumbia, MissouriActivePenn State ZetaPennsylvania State UniversityUniversity Park, PennsylvaniaActiveCincinnati EtaUniversity of CincinnatiCincinnati, OhioActiveLehigh ThetaLehigh UniversityBethlehem, PennsylvaniaActiveCarnegie IotaCarnegie Mellon UniversityPittsburgh, PennsylvaniaActiveTexas KappaUniversity of Texas at AustinAustin, TexasActiveOklahoma State LambdaOklahoma State UniversityStillwater, OklahomaActiveColorado MuUniversity of Colorado BoulderBoulder, ColoradoActiveCornell Pi TauCornell UniversityIthaca, New YorkActiveGeorgia Tech NuGeorgia TechAtlanta, GeorgiaActiveDrexel XiDrexel UniversityPhiladelphia, PennsylvaniaActiveIowa OmicronUniversity of IowaIowa City, IowaActiveKansas PsiUniversity of KansasLawrence, KansasActiveNebraska PiUniversity of Nebraska–LincolnLincoln, NebraskaActiveKansas State RhoKansas State UniversityManhattan, KansasActiveOklahoma SigmaUniversity of OklahomaNorman, OklahomaActivePittsburgh TauUniversity of PittsburghPittsburgh, PennsylvaniaActiveVirginia Tech UpsilonVirginia TechBlacksburg, VirginiaActiveRensselaer PhiRensselaer Polytechnic InstituteTroy, New YorkActiveAuburn ChiAuburn UniversityAuburn, AlabamaActiveDetroit Pi EtaUniversity of Detroit MercyDetroit, MichiganActiveMassachusetts Phi ThetaUniversity of Massachusetts AmherstAmherst, MassachusettsActiveOregon State OmegaOregon State UniversityCorvallis, OregonActiveNC State Pi AlphaNorth Carolina State UniversityRaleigh, North CarolinaActiveCCNY Pi BetaCity College of New YorkNew York City, New YorkInactiveWest Virginia Pi GammaWest Virginia UniversityMorgantown, West VirginiaActiveIowa State Pi EpsilonIowa State UniversityAmes, IowaActiveMarquette Pi DeltaMarquette UniversityMilwaukee, WisconsinActiveNYU Pi ZetaNew York UniversityNew York City, New YorkActiveNorthwestern Pi ThetaNorthwestern UniversityEvanston, IllinoisActiveDuke Pi IotaDuke UniversityDurham, North CarolinaActiveKentucky Pi LambdaUniversity of KentuckyLexington, KentuckyActiveMIT Pi KappaMassachusetts Institute of TechnologyCambridge, MassachusettsActiveSyracuse Pi NuSyracuse UniversitySyracuse, New YorkActiveOhio State Pi MuOhio State UniversityColumbus, OhioActiveUtah Pi XiUniversity of UtahSalt Lake City, UtahActiveAlabama Pi OmicronUniversity of AlabamaTuscaloosa, AlabamaActiveNew York Poly Pi PiBrooklyn Collegiate and Polytechnic Institute