Mary Bailey is a fictional character from the classic film It's a Wonderful Life, directed by Frank Capra. She is portrayed by actress Donna Reed and is the devoted wife of the main character, George Bailey. Mary is known for her strong support of George and her unwavering optimism throughout the challenges they face in their small town of Bedford Falls. In the film, Mary plays a crucial role in helping George realize the impact he has on the lives of others. Her character embodies love, resilience, and the importance of community, making her an essential part of the story's message about the value of life and relationships.