The Aegon Championships will this year have its strongest ever field, with 16 of the world's top 30 players set to compete at Queen's Club in June.
Britain's world number two and defending champion Andy Murray will be joined by four other top 10 players in Rafael Nadal, Stan Wawrinka, Jo-Wilfried Tsonga and Milos Raonic.
Marin Cilic, Juan Martin del Potro, Richard Gasquet, John Isner and Nick Kyrgios will also be competing.
The tournament runs from 13-19 June.
Scotsman Murray, 28, will be aiming to become the first player to win five titles at the pre-Wimbledon event.