Viongozi waliohudhuria katika kongamano hilo ni pamoja na wafuatao:
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The list of world leaders attended include:
- US Vice President Mike Pence
- US House Speaker Nancy Pelosi
- President of France Emmanuel Macron
- President of Austria Alexander Van der Bellen
- Governor-General of Canada Julie Payette
- Governor-General of Australia David Hurley
- President of Russia Vladimir Putin
- Prince Charles of Britain
- King of the Netherlands Willem-Alexander
- King Felipe VI of Spain
- King Philippe of Belgium
- President of Italy Sergio Mattarella
- President of Slovenia Borut Pahor
- President of Germany Frank-Walter Steinmeier
- President of Hungary János Áder
- President of Greece Prokopis Pavlopoulos
- Prime Minister of Sweden Stefan Löfven
- President of Iceland Guðni Th. Jóhannesson
- President of Ukraine Volodymyr Zolenskyy
- President of Cyprus Nicos Anastasiades
- President of Lithuania Gitanas Nausėda
- Crown Prince Haakon of Norway
- Prime Minister of Denmark Mette Frederiksen
- President of Finland Sauli Niinistö
- President of Portugal Marcelo Rebelo de Sousa
- President of Bulgaria Rumen Radev
- President of Romania Klaus Iohannis
- President of Slovakia Zuzana Čaputová
- Prime Minister of the Czech Republic Andrej Babiš
- President of Albania Ilir Meta
- President of Armenia Armen Sarkissian
- President of Georgia Salome Zourabichvili
- Speaker of the Latvian Parliament Ināra Mūrniece
- President of Moldova Igor Dodon
- Minister of State of Monaco Serge Telle
- Chairman of the House of Representatives of Belarus
- President of Croatia Kolinda Grabar-Kitarović
- President of Serbia Aleksandar Vučić
- President of Bosnia and Herzegovina Željko Komšić
- Grand Duke Henri of Luxembourg
- President of North Macedonia Stevo Pendarovski
- President of Montenegro Milo Đukanović
- President of the European Council Charles Michel
- President of the European Parliament David Sassoli
- Vatican Representative Kurt Koch