Our clients

Calliope has worked with hundreds of clients of all types, across all industries, and around the world. Here is just a selection of them. 

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Fundación OSDE

  • John Banville International Conference,2015,Buenos Aires, Argentina
  • Pierre Lévy: Capital in the twenty-First Century, 2015, Buenos Aires, Argentina
  • Thomas Piketty: Capital in the twenty-First Century,2015, Buenos Aires, Argentina
  • François Dubet: Inequality and democracy,2015, Buenos Aires, Argentina
  • Emmanuel Carrère: The novel of reality,2015, Buenos Aires, Argentina


  • G20 High-level Seminar on the International Monetary System, 2011, Nanjing

German Federal Agency for Nature Conservation

  • Workshop on Biodiversity and Ecosystem Services, 2020 Via Zoom with Interpreters at a Hub, Participants Remote

Girona Townhall, Archives and Publications Dpt

  • Cultural industry Congress, 2014, Girona, Spain


  • Judicial Ethics and the Fight against Corruption, 2017, San José, Costa Rica

GOPA.COM (formerly GOPA-Cartermill)

  • DG MAR, European Commission, 3rd Seminar on the Atlantic Action Plan, 2014, Dublin
  • Union for the Mediterranean Stakeholder Conference, 2017, Naples, Italy
  • Ministerial Meeting on the Blue Economy in the Western Mediterranean, 2018, Algiers, Algeria
  • Our Atlantic Ocean for Growth and Well-Being, 2018, Mindelo, Cabo Verde

Government of Ontario

  • Premier's Trade Mission, 2015, Nanjing, Shanghai, Hong Kong and Beijing, China

Greater ABC Consortium

  • Urban Mobility Meeting, 2018, Santo André, Brazil

Greek Parliament and EU

  • Greek EU Presidency, 1st Semester 2014, Greece

Guggenheim Collection

  • Guggenheim Board Meeting, 2016, Madrid, Spain
  • Guggenheim Board Meeting, 2018, Madrid, Spain

HABITAT III Conference

  • Side events on City Management, 2016, Quito, Ecuador

Head Tennis

  • Product Launch, 2017, Munich, Germany

Hellenic Ministry of Foreign Affairs

  • Conference of South EU States (G7)

Hellenic Parliament

  • Inter-Parliamentary Conference for the Common Foreign and Security Policy, 2014, Athens

Hewlett Packard

  • Brazilian Delegation Executive Visit, 2015, San Jose, CA

Hilti Group

  • Employee Town Hall Meetings, 2015, Schaan, Liechtenstein


  • Macroeconomic Forum, regular client, Shanghai


  • Huawei P30 Series Launch, 2019, Paris, France


  • Political and Corona Broadcasts, 2020, Interpretation via Zoom/Skype, phone & Technical Studio

IATA International Air Transport Association

  • 72nd AGM, 2016, Dublin, Ireland