Mackenzie Ryann Rosman (born December 28, 1989 in Charleston, South Carolina) is an American actress who is now a veteran of the small screen. She is most famous for her role as Ruthie Camden, who is now a high school sophomore on The WB's 7th Heaven. She and her character have literally grown up together, sharing many of the same life experiences.

In 1996, she got the part of Ruthie Camden on 7th Heaven, which she still plays today, in its tenth season. In addition to her role on the drama series, Rosman appeared in the independent film Gideon, starring Christopher Lambert, Charlton Heston and Shelly Winters. She has appeared in numerous television commercials starting at age four. She also played JonBenet Ramsey in Getting Away With Murder: The JonBenet Ramsey Story.