The nuptials took place at The Regency hotel, where the 44-year-old actor stayed in, reported TMZ.
Renner was in Houston to attend Comicpalooza. When he went to the bar in the hotel, it appeared that the party was going on.
Renner kept low profile as he tried to avoid the spotlight after a day of work. He sneakily made his way through the crowd and hid in the corner of the bar to enjoy some beverages.
However, his presence in grey T-shirt topped with black suit was not left unnoticed. Some people asked him to take pictures with them.
"I did enjoy conversations with many of the guests for about 15 minutes and went off to enjoy the sights of Houston for the night. I also shared my congratulations to the guests and the bride and groom," said the "Kill the Messenger" actor.