The Spaniard has played at Queen’s five times and on each occasion went on to reach the Wimbledon final a few weeks later, winning the grass court major in 2008 and 2010.
Since his last visit in 2011, however, Nadal’s luck at Wimbledon has run out, losing in the second, first and fourth rounds.
Britain’s tax laws were cited as one reason the nine-time French Open champion decided to stop playing at Queen’s and warm up at the Gerry Weber Open in Halle in recent years.
The world No 3 adds to an already strong cast at Aegon Championships where home favourite Andy Murray, defending champion Grigor Dmitrov and US Open holder Marin Cilic are already committed to play.
“I’m very happy to be back,??? Nadal said. ???Queen’s is a great event, I always enjoyed it, I had some great feelings there, the atmosphere of the club – a real tennis club – is very special. The courts are unbelievable and I’m very happy to be back.
“I enjoyed Halle but the results have not been perfect for me there, so I want to try Queen’s again where the grass courts are a little bit more similar to Wimbledon.”
Tournament director Stephen Farrow said it was great to have Nadal, 28, back.
“Rafa is one of the greatest tennis players of all time and he is universally popular, so this is fantastic news for the Aegon Championships and our spectators,” he said.
“We have stayed in contact with Rafa and his team over the years and we always hoped he would return one day.”
This year’s Queen’s tournament has been upgraded to an ATP 500 and will begin on June 15, a week later than usual to allow players more of a grass court swing.