The 'Shine' singer's wife Emma Ferguson has given birth to a daughter named Fox India Owen, it was confirmed on the band's official Twitter profile.
"She was born yesterday (July 24) at 7.45am weighing 7lb 1oz," a later message read. "They would like to thank all their friends and family for all the wonderful messages xxx."
The couple, who married in 2009, first announced Ferguson's pregnancy three months ago.
They are already parents to a son named Elwood Jack and daughter Willow Rose.
Owen's Take That bandmates Gary Barlow and Robbie Williams are also poised to welcome baby daughters.
Barlow will become a father for a fourth time later this year, while Williams confirmed in April that he and wife Ayda Field are expecting their first child.