Danish player Wozniacki spent 71 weeks at the top of the world rankings and finished with 30 singles titles - including a grand slam crown at the Australian Open in 2018.
She announced her retirement prior to the 2020 Australian Open at the age of 29, saying she wanted to start a family with her husband, former NBA player David Lee. She has since had a daughter Olivia and son James.
"Over these past three years away from the game I got to make up for lost time with my family, I became a mother and now have two beautiful children I am so grateful for," she wrote on Twitter.
"But I still have goals I want to accomplish. I want to show my kids that you can pursue your dreams no matter your age or role.
"We decided as a family it's time. I'm coming back to play and I can't wait!"
In an article for the Vogue magazine, Wozniacki said she will start out playing the Canadian Open in August before heading to New York for the US Open on August 28-September 10.
"The Paris Olympics are definitely a goal too," she said about the games next year.
The US Tennis Association said it would grant her a wild-card invitation to participate in the US Open.
with DPA and AP
10°C