Alexander Schmidt-Vogel, the worldwide chief executive of MediaCom, will preside over the Media jury with the chairman and chief executive of Draft Inc, Howard Daft, heading the Lions Direct jury.
Finally, Bob Greenberg, the chairman, chief executive and chief creative officer for R/GA in the US, will chair the Cyber jury.
There will be ten representatives from the UK spread over the four panels.
Sitting on the Film board are Robert Campbell, the executive creative director for McCann-Erickson, and J. Walter Thompson's executive worldwide creative director, Charity Charity.
Publicis London's head of copy, Gavin Kellett, is on the Press and Outdoor jury while the associate director for UK media at Procter & Gamble, Bernard Balderston, is among the 16 Media judges.
The Direct jury incorporates Tim Bonnet, the chief executive for Tequila London, and Ian Howarth, the executive director at WWAV Rapp Collins.
Maria Phillips, a creative partner at Watson Phillips Norman, and Craik Jones Watson Mitchell Voelkel's creative head, Rebecca Rae, will also preside.
For the first time, three clients, HP, Ikea and Procter & Gamble, are represented on this year's Media Lions jury.
Finally, on the Cyber jury the UK will be represented by Simon Milliship, the executive creative director, EMEA, for Wunderman Interactive, and Jon Williams, the interactive creative director at Publicis Dialog.
Separately, the chairman of BMW, Dr Helmut Panke, has been named the Advertiser of the Year by the Cannes Lions International Advertising Festival. This award recognises BMW Group's innovative and creative advertising in recent years, which has seen it awarded four gold Lions along with the first titanium Lion at last year's festival.
Panke will be presented with his award at the 2004 Cannes Festival from 21-26 June 2004.