National Societies

Country	Title	Web Site
Argentina	SADIO	www.sadio.org.ar/pn750/
Australia	ASOR	www.asor.org.au
Austria	ÖGOR	www.oegor.at
Bangladesh	ORSB
Belarus
Belgium	ORBEL/Sogesci-B.V.W.B.	www.orbel.be
Brazil	SOBRAPO	www.sobrapo.org.br
Bulgaria	BORS
Canada	CORS/SCRO	www.cors.ca
Chile	ICHIO	www.ind.utfsm.cl/ichio/
China	ORSC	www.orsc.edu.cn
Colombia	CRORS	www.socio.org.co
Croatia	CROR
Czech Republic	CSOR	nb.vse.cz.csov.rada.htm
Denmark	DORS	www.dorsnet.dk
Egypt	ORSE
Finland	FORS	www.operaatiotutkimus.fi
France	ROADEF	www.readef.org/
Germany	GOR	https://gor.uni-paderborn.de
Greece	HELORS	www.eeee.org.gr
Hong Kong	ORSHK
Hungary	HORS	www.hors.hu/
Iceland	ICORS	www.agr.is/arfi/orsociety.html
India	ORSI
Ireland	ORMSI	mis.ucd.ie/mssi
Israel	ORSIS	iew3.technion.ac.il/Labs/Orsis
Italy	AIRO	www.airo.org
Japan	ORSJ	www.orsj.or.jp/
Korea	KORS	www.korms.or.kr
Lithuania	LITORS	www.mii.lt/LitORS
Malaysia	MSORSM	www.managementsciences.org.my
Mexico
Netherlands	NSOR	www.ngb-online.nl
New Zealand	ORSNZ	www.orsnz.org.nz
Norway	NORS
Philippines	ORSP	www.orsp.org.ph
Poland	ASPORS	www.ptbois.org.pl
Portugal	APDIO	www.apdio.pt
Serbia Montenegro	YUORS	www.dopis.org.yu
Singapore	ORSS	sunsite.nus.edu.sg/ORSS
Slovakia	SSOR	fhi.euba.sk/ssov
Slovenia	SDI-SOR	www.drustvo-informatika.si/sekcije/sor/index.jsp
South Africa	ORSSA	www.orssa.org.za
Spain	SEIO	www.seio.es/
Sweden	SOAF	www.soaf.se
Switzerland	SVOR	www.svor.ch/
Turkey	ORST	www.yad.org.tr
United Kingdom	ORS	www.theorsociety.com
United States of America	INFORMS	www.informs.org

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