Mikael Persbrandt as Dag Hammarskjöld

Francis Chouler as Bill Ranallo

Cian Barry as Wieschhoff

Colin Salmon as Ralph Bunche

Sara Soulié as Hanna

Hakeem Kae-Kazim as Moise Tshombe

Thure Lindhardt as Peter Levin

Richard Brake as Hunter

Martin Venter as Renard

Zak Rowlands as Baldini

Adam Neill as Lord Lansdowne

Norman Anstey as Hammarskjöld's Butler

Michael D. Xavier as Hellemans

Caspar Phillipson as John F. Kennedy

Sven Ahlström as Sture Linner

Bjorn Steinbach as Lone Ranger

Christophe Guybet as Bloock

Jordan Duvigneau as Patrice Lumumba

Céline Tshika as Ruth Tshombe

Mattias Nordkvist as Bo Beskow

Brian Caspe as Shelton

Sean Duggan as Conor O'Brien

Vasiliy Mishchenko as Nikita Khrushchev

Urs Rechn as Kirov

Philippe De Grossouvre as Vilon

Jacques Adriaanse as Donald Smith

Sanna Sundqvist as Greta Beskow

Martin Munro as Martin

Rory Acton Burnell as Williams

Matthew Lotter as DC-6 Navigator

Lucas Lynggaard Tønnesen as Young Peter Levin

Clayton Boyd as Reporter

Edvin Endre as Young Dag Hammarskjöld

Wandile Molebatsi as Reporter no 3 at Leopoldville Airport

Tom Hale as US Ambassador

Nelson De Gouveia as Technician

Rob van Vuuren as Kennedy's Advisor

Wayne Harrison as Gallway

Gavin Werner as Stranger in Restroom

André Jacobs as Radcliff

Dorette Potgieter as Helleman's Wife

Emile Tredoux as Reporter no 1 at UN Conference

Chantal Nell as DC-6 Air Steward

Mehboob Bawa as Reporter

Cameron Krogh Stone as DC-6 Co-Pilot

Jean Teplitsky as French Ambassador

Ruari McKee as Belgian Advisor

David James as Congo Red

Christian Hillborg as Captain Hallonqvist

Antony Coleman as Reporter no 1 at Leopoldville Airport

Eduard Jörgen as Chilean Ambassador (uncredited)

Björn Kinder as Ambassador -Under-Secretary (uncredited)

Lars Ulrich Larsson as US Deputy Ambassador (uncredited)