Pia Miller (née Loyola; born 2 November 1983) is a Chilean-born Australian fashion model, actress and television presenter. Miller came to prominence after winning Dolly's annual modelling competition. She later competed in the second series of Search for a Supermodel. Miller has appeared in various advertising campaigns for brands such as Myer and Mossimo. She became the co-host of Qantas' in-flight entertainment programs in 2010 and was named the first Australian celebrity tourism ambassador for Chile in 2014.

After taking acting lessons and presentation classes at the National Institute of Dramatic Art in 2009, Miller became a presenter on the travel show Postcards Victoria and made guest appearances in several television shows, including East West 101 and Neighbours. In August 2014, Miller joined the regular cast of Home and Away as Katarina Chapman. She made her screen debut in February 2015.