No, Morgan Wallen is not married to Katie Smith.
Morgan Wallen's Relationship Status
Morgan Wallen is not currently married, nor has he ever been married. His relationship history indicates that while he has had significant partners, he has not tied the knot.
Past Relationship with Katie Smith
Morgan Wallen and Katie Smith (often referred to as KT Smith) did have a serious relationship in the past. They were engaged at one point and share a son named Indigo "Indie" Wilder. However, their engagement ended, and they ultimately broke up. Despite having a child together, they are not married and have not been married.