Monica Keena was born in New Jersey on May 28, 1979, to Bill and Mary Keena and was little sister to Samantha, the Keenas' first daughter. Growing up, Monica shone in all things arts. Dance, singing, acting, and drawing. At 13, Keena enrolled in the prestigious LaGuardia school for acting and made it. At age 15, she had a small role in her first film, and that was followed by a series of TV movies such as First Daughter and the A Promise Kept: The Oksana Baiul Story. Monica starred in her first movie, Ripe, at 16 and considers that her favorite role as of now. In 1998, she premiered on the WB's Dawson's Creek as truth telling Abby Morgan and later left the show when she "got bored playing one character."

Today Monica continues to make movies like Freddy vs. Jason, Cheer Up, and Fifty Pills. In her free time, she enjoys skating.
Says that her film Ripe is the movie that she is most proud of. Has been rollerskating and skatebording since a young child. Her favorite actress is Judy Garland and her favorite movie is The Wizard of Oz. Only spent 2 1/2 years in her High School because she was constantly filming. Sister Samantha is two years older. Was raised in Brooklyn, New York, and still lives in the city. Gives Kathy Bates and Jennifer Jason Leigh credit for her still being in the acting business. Posed for Maxim, Stuff Magazine and FHM. Favorite shows are The Simpsons and Charmed. Did a screen test with Al Pacino. Character Rachel Lindquist was based on her. Claims she is anti doing anything physical. Doesn't let fame affect her personal life Enjoys writing and is an English major. Has a fear of the dark. Her own teenage friendships suffered when she traveled for acting work. Is good friends with actor Vincent Kartheiser. Takes writing classes. Won an award in 7th grade for reciting the poem "Casey at the Bat". As a young child, she was always drawing, painting, dancing and singing. Monica auditioned for acceptance into LaGuardia High School of Performing Arts, made famous around the world by Fame. She was accepted into both the vocal and dramatic arts department, choosing drama as her preference. Monica has always found an outlet for her creativity. As a child, she immersed herself in classes, determined to perfect her craft in drawing, painting, singing and dance She has performed at the Heights Players in Brooklyn in Little Women (as Beth) and The Lion, The Witch and The Wardrobe as Lucy (alongside actor Tim Realbuto). Is friends with actress Meredith Monroe. Her parents enrolled her in prep schools to keep her sheltered from the "wild life", little did they know that would lead her on a string of rebellion through her early teens. Despite playing the "dumb girl" in movies and TV, she actually graduated with a 4.0 GPA and was considered gifted in intelligence and arts. During the New York run of the highly controversial film Ripe,stars Monica Keena and Daisy Eagan would regularly attend screenings so they could meet the fans that saw it and get reactions. Her Mom and Grandmother raised her when she was growing up. She took her grandmother to the Freddy vs. Jason premiere. The school she attended in Brooklyn Heights, Saint Ann's, was recently named #1 school in the country by The Wall Street Journal.