Jessica Lee Rose (born April 26, 1987) is an American-born New Zealand raised actress who first gained popularity after playing role of lonelygirl15. She matriculated at Mount Maunganui College, Studio 111, and the New York Film Academy, where she acted and did makeup and costume work in a number of student and professional films.

In the Summer of 2006, Rose debuted as lonelygirl15, a fictional teenage homeschooled character named Bree who appeared in many video blogs (also known as a vlog) on the popular video-sharing website YouTube. The mystery surrounding the possible fictionality of her character lead to an outing by the Los Angeles Times which thrusted her into the mainstream spotlight. In 2007, Rose won a Webby for this role.

After Bree was killed off lonelygirl15 in 2007, Rose played "Jen K." on ABC Family's Greek. She went on to appear in various movies, such as Perfect Sport and SyFy's Ghost Town, and other web series, such as Hooking Up and Sorority Forever. She is currently appearing in the web series Poor Paul and The Crew.