It will be the first time the struggling Djokovic has played a grass-court event between the French Open and Wimbledon since 2010.
The 30-year-old Serb saw his French Open title defence come to a surprise halt with a straight sets quarter-final loss to the up-and-coming Dominic Thiem on the clay courts of Roland Garros in Paris this month.
Now, following what was his quickest exit from the French Open in seven years, 12-time Grand Slam champion is to play Eastbourne, which runs from June 23-July 1 after accepting a main draw wildcard.
World number four Djokovic comes into the event will be the tournament's top seed ahead of number two Gael Monfils and number three John Isner.
Originally a women's only event, Eastbourne has been expanded to include men's tennis as well and tournament director Gavin Fletcher said: "The quality of the men's and women's entries is already incredibly high, and the addition of Novak will take the event to an even higher level."