In determining this list I had a few considerations to keep in mind. Age was definitely a factor as I tried to stay under 30, even if they are someone who is just breaking onto scene. Also, this is not a list of best actors and actresses under 30. They can’t be too established (so there is no Jennifer Lawrence). Elizabeth Olsen certainly turned heads in Martha Marcy May Marlene, but I don’t know if she’s on the public’s lips just yet.