Jessica Grace Smith (born 18 February 1985) is a New Zealand actress, writer and director. Smith graduated from Toi Whakaari: New Zealand Drama School in 2009 with a Bachelor in Performing Arts (Acting). Smith played the role of Denny Miller on the television show Home and Away and Diona in the mini-series Spartacus: Gods of the Arena. Smith also appeared in the films The Devil's Rock and Sione's 2: Unfinished Business.