Sigma Alpha is an American professional sorority for agricultural students. It was established at Ohio State University in 1978. Following are the chapters of Sigma Alpha, with active chapters indicated in bold and inactive chapters in italics.

ChapterCharter dateInstitutionLocationStatusAlphaOhio State UniversityColumbus, OhioActiveBetaPurdue UniversityWest Lafayette, IndianaActiveGamma1985–198x ?; 1990Michigan State UniversityEast Lansing, MichiganActiveDelta1986Iowa State UniversityAmes, IowaActiveEpsilon1989Pennsylvania State UniversityState College, PennsylvaniaActiveZeta1989Louisiana State UniversityBaton Rouge, LouisianaActiveEta1990University of ConnecticutStorrs, ConnecticutActiveThetaUniversity of TennesseeKnoxville, TennesseeActiveIota1990University of ArkansasFayetteville, ArkansasActiveKappa1990California Polytechnic State University, San Luis ObispoSan Luis Obispo, CaliforniaActiveLambda1990University of California, DavisDavis, CaliforniaActiveMu1991University of VermontBurlington, VermontInactiveNuColorado State UniversityFort Collins, ColoradoActiveXiOregon State UniversityCorvallis, OregonActiveOmicronTruman State UniversityKirksville, MissouriActivePi1992Virginia TechBlacksburg, VirginiaActiveRho199x ?Texas Tech UniversityLubbock, TexasActiveSigma199x ?Western Illinois UniversityMacomb, IllinoisActiveTau199x ?Clemson UniversityClemson, South CarolinaActiveUpsilon199x ?North Dakota State UniversityFargo, North DakotaActivePhi199x ?East Texas A&M UniversityCommerce, TexasActiveChi1995West Virginia UniversityMorgantown, West VirginiaActivePsi199x ?Middle Tennessee State UniversityMurfreesboro, TennesseeActiveOmega199x ?South Dakota State UniversityBrookings, South DakotaActiveAlpha Alpha199x ?UnassignedAlpha Beta199x ?Northwest Missouri State UniversityMaryville, MissouriActiveAlpha GammaSouthern Illinois University CarbondaleCarbondale, IllinoisActiveAlpha Delta199x ?University of Nebraska–LincolnLincoln, NebraskaActiveAlpha Epsilon1997University of WyomingLaramie, WyomingActiveAlpha Zeta199x ?Tarleton State UniversityStephenville, TexasActiveAlpha Eta199x ?Stephen F. Austin State UniversityNacogdoches, TexasActiveAlpha ThetaNorth Carolina State UniversityRaleigh, North CarolinaActiveAlpha Iota1998California State University, ChicoChico, CaliforniaActiveAlpha Kappa1999University of DelawareNewark, DelawareActiveAlpha LambdaDelaware Valley UniversityDoylestown, PennsylvaniaActiveAlpha MuUniversity of Illinois Urbana-ChampaignChampaign, IllinoisActiveAlpha Nu2000 ?Arizona State UniversityTempe, ArizonaActiveAlpha XiMissouri State UniversitySpringfield, MissouriActiveAlpha OmicronUniversity of GeorgiaAthens, GeorgiaActiveAlpha PiTexas A&M UniversityCollege Station, TexasActiveAlpha Rho20xx ?University of ArizonaTucson, ArizonaActiveAlpha SigmaNew Mexico State UniversityLas Cruces, New MexicoActiveAlpha TauUniversity of Wisconsin–MadisonMadison, WisconsinActiveAlpha UpsilonMurray State UniversityMurray, KentuckyActiveAlpha Phi200x ?California State University, FresnoFresno, CaliforniaActiveAlpha ChiUniversity of MissouriColumbia, MissouriActiveAlpha Psi200x ?Cornell UniversityIthaca, New YorkActiveAlpha Omega200x ?Kansas State UniversityManhattan, KansasActiveBeta Alpha2003University of Maryland, College ParkCollege Park, MarylandActiveBeta Beta200x ?UnassignedBeta GammaUniversity of FloridaGainesville, FloridaActiveBeta Delta200x ?University of Wisconsin–PlattevillePlatteville, WisconsinActiveBeta EpsilonUniversity of IdahoMoscow, IdahoActiveBeta ZetaUniversity of Wisconsin–River FallsRiver Falls, WisconsinActiveBeta EtaAuburn UniversityAuburn, AlabamaActiveBeta ThetaUniversity of Tennessee at MartinMartin, TennesseeActiveBeta Iota2007Florida Southern CollegeLakeland, FloridaInactiveBeta Kappa20xx ?University of New HampshireDurham, New HampshireActiveBeta Lambda20xx ?University of Rhode IslandKingston, Rhode IslandInactiveBeta Mu2023Fort Hays State UniversityHays, KansasActiveBeta Nu20xx ?Abraham Baldwin Agricultural CollegeTifton, GeorgiaActiveBeta Xi20xx ?Illinois State UniversityNormal, IllinoisActiveBeta OmicronUniversity of KentuckyLexington, KentuckyActiveBeta Pi Sam Houston State UniversityHuntsville, TexasActiveBeta Rho201x ?Southern Arkansas UniversityMagnolia, ArkansasActiveBeta Sigma2014Western Kentucky UniversityBowling Green, KentuckyActiveBeta Tau201x ?Arkansas Tech UniversityRussellville, ArkansasActiveBeta Upsilon201x ?Mississippi State UniversityMississippi State, MississippiActiveBeta Phi201x ?Morehead State UniversityMorehead, KentuckyActiveBeta Chi2017Eastern Kentucky UniversityRichmond, KentuckyActiveBeta Psi2017 ?Oklahoma State UniversityStillwater, OklahomaActiveBeta Omega2017Washington State UniversityPullman, WashingtonActiveGamma Alpha201x ?Wilmington CollegeWilmington, OhioActiveGamma BetaMontana State UniversityBozeman, MontanaActiveGamma Gamma20xx ?UnassignedGamma Delta20xx ?State University of New York at CobleskillCobleskill, New YorkActiveGamma Zeta20xx ?Tennessee TechCookeville, TennesseeActiveGamma Eta2023Utah State UniversityLogan, UtahActive

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