The drama series stars Sarah Michelle Gellar as Bridget, a woman on the run who assumes the identity of her twin sister Siobhan.
All My Children star Bruening will appear in multiple episodes as Tyler, a potential romantic interest for Gellar's character, according to TV Line.
The actor previously played Jamie Martin on ABC soap opera All My Children from 2003 to 2007 and also appeared in eight episodes of sister series One Life to Live.
Bruening recently appeared in an episode of Castle and played the role of Steve Trevor in NBC's rejected Wonder Woman pilot.
Ringer premieres on Tuesday, September 13 at 9/8c on The CW.
> Ringer exec promises 'twists, turns, secrets'
Watch the latest trailer for Ringer below: