The 31-year-old Tunisian, twice a beaten Wimbledon finalist, decided to take a break in her career in July after two injury-plagued years and is now ranked 79th.
Below a photo of her and husband Karim Kamoun holding a Wimbledon-branded baby onesie, Jabeur posted on Instagram late Monday: "Took a little break to reset and recharge... Turns out, we've been planning the cutest comeback ever.
"The court will have to wait a little longer, because soon… We'll be welcoming our tiniest teammate. Baby boy joining the team in April."
Jabeur is the highest-ranking player from an Arab nation in WTA history.
In addition to her exploits at Wimbledon, she was also the beaten finalist in the 2022 US Open.