The 27-year-old Belarusian, a former world number one and two-time Australian Open champion, will play her first tournament in over a year at the Mallorca Open.
"I really want to play again and it will be special to do so in a place as incredible as Mallorca," she said in a statement on the website of the Mallorca Open, a Wimbledon warm-up tournament that begins on June 18.
Azarenka launched her 2016 campaign with back-to-back titles at Indian Wells and Miami, but missed the rest of the season after announcing she was to give birth in December.
Wimbledon begins on July 3.