Page's representative confirmed the news to People magazine Wednesday. The couple went public with their romance last summer.
The newlyweds shared on their respective Instagram accounts a photo of their wedding-ring-adorned hands touching against a white background.
"Can't believe I get to call this extraordinary woman my wife," Page captioned the image.
Portner wrote in her own message: "I get to call this incredible woman MY WIFE! @ellenpage I LOVE YOU!"