The 'Once Upon a Time' star's wife Tanya Flynn is expecting the couple's first child.
The 38-year-old actor took to Twitter to share the good news.
"I am so over the moon with excitement to announce @Tanyajflynn and I are expecting our first child. Cannot wait to finally be a daddy!," he tweeted.
The announcement comes nearly a month after Maguire and his police detective wife renewed their wedding vows during an intimate ceremony in Ireland.
Maguire and Flynn first wed in October, 2012.