Julia Zemiro is a French-born Australian television presenter, radio host, actress, singer, writer and comedian. She is best known as the host of the music quiz and live performance show RocKwiz. Zemiro is a fluent French speaker and has acted in French.

RocKwiz is an Australian television live music trivia quiz show, focused on rock music and featuring different guest artist musicians who perform live in each episode. The show was co-created by Brian Nankervis, Peter Bain-Hogg, and Ken Connor. It was originally broadcast on SBS and premiered in 2005 also on Foxtel's Max but now airs on Foxtel. The 14th season, which was the final season aired by SBS, premiered on 7 May 2016. Season 14 consisted of 7 episodes, recorded between February and April 2016, with the theme "RocKwiz Salutes The Legends". The final episode aired on 25 June 2016. The series won the 2007 AACTA Award for Best Light Entertainment Television Series and was nominated in the same category three times, it was also nominated for a Helpmann Award. On February 3, 2019 it was announced that SBS would no longer be commissioning any more TV episodes although the live touring shows would continue. In 2023, a new series was commissioned by Foxtel, with some changes to the format including a focus on more recent music and filming in a studio.