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. 

Government of Ontario

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

Greek Parliament and EU

  • Greek EU Presidency, 1st Semester 2014, Greece

Guggenheim Collection

  • Guggenheim Board Meeting, 2016, 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

IATA International Air Transport Association

  • 72nd AGM, 2016, Dublin, Ireland

IBF/European Commission

  • EU & Canada as strategic Partners, 2016, Ottawa, Canada


  • Visit to China by IBM Board of Directors, 2012, Shanghai, Beijing
  • Visit of IBM's Global Chairman, President & CEO, 2016, Beijing, China


  • Global Aviation Cooperation Symposium, 2017, Athens, Greece


  • ICLEI World Conference 2018, Montreal, Canada

Ideas Media Group

  • UNICEF V International Seminar on Social Investment, 2017, Buenos Aires, Argentina


  • 8th Annual Meeting, 2016, Copenhagen, Denmark


  • Visit, Credit Agricole Directors, Tel Aviv, Jerusalem, Haifa, Israel


  • ARCO (International Fair of Contemporary Art), 2016, Lisbon, Portugal

Intel Software de Argentina

  • Use of Technology in the Health & Education Sectors, 2015, Buenos Aires, Argentina