Kerry Condon (b. 1983) is an Irish actress who played Marietta Flynn in the Jim Henson Company film Rat.
Her other film credits include Angela's Ashes, the 2003 film Ned Kelly (with Jonathan Hardy), Intermission, and Danny the Dog (with Morgan Freeman). In television, she was a regular on the HBO series Rome, as Octavia, and appeared in two episodes of Ballykissangel.