Osaka's longtime agent Stuart Duguid has also left IMG to start up the new agency with the 24-year-old from Japan.
Former No 1 Osaka appeared to confirm the news by retweeting an article about the move with three rocketship emojis.
She also tweeted out a compilation of clips from her earlier playing days in which she discussed her career aspirations with the caption "Hey kid, you’ve come a long way and even though there have been some bumps on the road I hope you know you’re doing amazing."
Hey kid, you’ve come a long way and even though there’s been some bumps on the road I hope you know you’re doing amazing. pic.twitter.com/l01kNg3sWi— NaomiOsaka大坂なおみ (@naomiosaka) May 11, 2022
In one of the clips, she prophetically discussed what she might be doing were she not a tennis player.
"I just like sports, so maybe (I would be) like an agent in the end," she said.