Ria Vandervis (born 5 July 1984) is a New Zealand actress. She is most known for her role as Harper Whitley in Shortland Street and Miratrix in Power Rangers Operation Overdrive.
From 2002 to 2006, Vandervis acted in multiple UNITEC theatre productions and short films. Between 2004 and 2006 Vandervis starred in various short films such as the Lovely Creature, A Telling Time, Tough Fortune Cookies and Billy for Lilly as Siren, Julia, Fran and Sarah respectively. In 2007, Vandervis played a supporting role as Cindy Cockburn in the film The Devil Dared Me To. Vandervis also played Miratrix in the film Power Rangers Operation Overdrive. In 2009 Vandervis played various television roles, starting in Packed to the Rafters as Layla Soubrani, The Cut, Underbelly and Rescue: Special Ops. In 2010, Vandervis played the regular role of Senior Constable Roxanne Perez in the Nine Network police drama Cops L.A.C. In 2013, Vandervis played Detective Christie Mills in the TV3 police drama Harry.