• Namibia – Office of the National Ombudsman
• Office of the Public Protector, South Africa
• Uganda
• Inspector General of Government, Ombudsman, Uganda
• Zambia
• Investigator-General, Zambia

Asia

• Office of the Ombudsman, Korea
• Commission Against Corruption, Macao

Australasia & Pacific

• Office of the Ombudsman, Hong Kong
• Office of the Ombudsmen of New Zealand
• Office of the Commonwealth Ombudsman & Defence Force Ombudsman, Federal
• Office of the Ombudsman, New SouthWales
• Ombudsman & Commissioner, Health and Community Services Complaints Commission, Northern Territory
• Office of the Ombudsman, South Australia
• Office of the Control Yuan, Taiwan
• Office of the Ombudsman, Tasmania
• Office of the Ombudsman, Victoria
• Parliamentary Commissioner for Administrative Investigations, Western Australia
• Queensland Ombudsman

Caribbean/ Latin America

• Defensor del Pueblo de la Republica, Argentina
• Defensoria del Pueblo Buenos Aires
• Office of the National Ombudsman, Barbados
• Defensor de los Habitantes, Costa Rica
• Comisionado Nacional de Proteccion de los Derechos Humanos, Honduras
• Comision Nacional de Derechos Humanos, Mexico
• Comision de Derechos Humanos de Jalisco, Mexico
• Comision de Derechos Humanos del Estado de Veracruz, Mexico
• Defensoria del Pueblo, Panama
• Defensor del Pueblo, Peru

• The European Ombudsman
• Volksanwaltschaft, Austria
• Landesvolksanwalt von Vorarlberg, Austria
• Office of the Federal Ombudsmen, Belgium
• Ombudsman of the Flemish Community, Belgium
• Mediateur de la Region Wallonne, Belgium
• Czech Republic
• Folketingets Ombudsmand, Denmark
• Office of the Parliamentary Ombudsman, Finland
• Office of the Chancellor of Justice, Finland
• Mediateur de la Republique, France
• Ombudsman of the European Union
• Public Defender, Georgia
• Petitions Committee of the German Bundestag, Germany
• Office of the Ombudsman, Gibraltor
• Office of the Ombudsman, Greece
• Parliamentary Ombudsman, Iceland
• National Ombudsman, State Comptroller & Commissioner for Complaints from the Public, Israel
• National Ombudsman, Ireland
• Northern Ireland Assembly Ombudsman and Commissioner for Complaints
• Parliamentary Commissioner for Administration & Commissioner for Complaints, Northern Ireland
• Il Difensore Civico della Regione Toscana, Italy
• Centre for Human Rights, Moldova
• De Nationale Ombudsman, The Netherlands
• Parliamentary Ombudsman, Norway
• Provedor de Justica, Portugal
• Office of the Ombudsman, Romania
• Office of the Ombudsman, Slovenia
• Defensor del Pueblo, Spain (National)
• Defensor del Pueblo, Andaluz, Spain (Regional)
• El Justica de Aragon, Spain
• El Justica de Pobo de Galicia, Spain
• Procurador del Comun de Castilla y Leon, Spain
• Ararteko Pays Vasco (Regional)
• Sindic deGreuges de la Comunitat Valenciana (Regional)
• Riksdagens Ombudsman, Sweden
• Office of the Ombudsman, Thailand
• Parliamentary Commissioner for Administration & Health Service Commissioner, United Kingdom
• Commission for Local Administration in England, London
• Commission for Local Administration in Wales
• Office of the Ombudsman, Uzbekistan
• Scottish Public Services, United Kingdom

North America

Canada

• Office of the Ombudsman, Alberta
• Office of the Ombudsman, British Columbia
• Office of the Ombudsman, Manitoba
• Office of the Ombudsman, Ontario
• Le Protectrice du Citoyen, Quebec
• Office of the Ombudsman, Saskatchewan

U.S.A.

• Office of the Ombudsman, Alaska
• Municipal Ombudsman, Anchorage
• Citizen's Aide Ombudsman, Arizona
• Office of the Ombudsman, Hawaii
• Office of the Citizens' Aide Ombudsman, Iowa
• Municipal Ombudsman, Michigan
• Joint Office of Citizens Complaints, Ohio
• Municipal Ombudsman, Portland
• Commonwealth Ombudsman, Puerto Rico
• King County Office of Citizens' Complaints, Seattle, Washington

Institutes

• American Bar Association Ombudsman Committee
• Centre for Ombudsman and Governance Studies
• British & Irish Ombudsman Association , United Kingdom
• European Ombudsman Institute, Austria
• Forum of Canadian Ombudsman
• International Ombudsman Institute, (IOI)
• The Ombudsman Association (Business) U.S.A.
• The United States Ombudsman Association (USOA) 

Speciality Ombudsman / Private Sector Ombudsmen

• Internal Ombudsman (Wollongong), N.S.W., Australia 
• Federal Correctional Investigator, Canada
• R.C.M.P. Public Complaints Commission
• Commissioner of Official Languages, Canada
• Privacy Commissioner, Canada
• Canada Post Ombudsman, Canada
• Police Ombudsman for Northern Ireland, Northern Ireland
• Insurance Ombudsman, Republic of Ireland
• Scottish Legal Services Ombudsman, United Kingdom
• Broadcasting Standards Commission, United Kingdom
• Independent Housing Ombudsman, United Kingdom
• Police Complaints Authority, United Kingdom
• Legal Services Ombudsman, United Kingdom
• Funeral Ombudsman, United Kingdom
• Estates Agents Ombudsman, United Kingdom