Peta Sergeant

Sergeant grew up in Brisbane, Queensland. She graduated from Sydney's National Institute of Dramatic Art (NIDA) in 2000.

As part of the Sydney 2000 Olympic Games opening ceremony, Sergeant was a member of the company that devised and performed There Is No Need to Wake Up directed by Barrie Kosky. She then co-produced and had a role in Howard Korder's Boys' Life directed by Toby Schmitz, for the 2001 Sydney Fringe Festival. The following year, she also produced and appeared in a staging of Accelerando for the Sydney Fringe.

Sergeant appeared in a 2002 episode of sci-fi television series Beastmaster, playing the role of Yamira, before landing a recurring guest role in the third season of children's sci-fi drama series Jeopardy, playing Dr Sharpe in 2004. She then played the recurring role of Janessa in 2005 Seven Network comedy-drama series Last Man Standing, opposite Rodger Corser and Matt Passmore. In 2006, she appeared opposite Aden Young and Matthew Newton in drama film The Bet. That same year, she received praise for "a stand out performance amid an excellent cast" as Indigo, in Sue Smith's play Thrall.

Sergeant had a recurring guest role in medical drama series All Saints, as surgeon Dr Bianca Frost in 2007. She also began playing a main role as opinionated lesbian call girl Heather, alongside Madeleine West and Kestie Morassi in Showcase drama series Satisfaction, about the lives of six women working in an upmarket brothel. During this time, she also starred as corrections officer Holly Chong in short-lived 2008 drama series Canal Road.

In 2009, Sergeant received critical acclaim for her portrayal of a woman on the run in Steve Rodgers' play Savage River, for Griffin Theatre Company. She was cast as Nina Cruz in the Melbourne Theatre Company production of All About My Mother, an adaptation for the stage based on the film by Pedro Almodóvar, directed by Simon Phillips. In 2010, she was awarded a Mike Walsh Fellowships Special Grant.

In 2012, Sergeant starred in sci-fi comedy action

film Iron Sky as Vivian Wagner and in Australian horror film Crawlspace as Wiki. That same year, she joined the supporting cast of Australian drama series Winners & Losers as Cat Johnson. In 2013, she featured as Nurse Williams in Australian supernatural horror film Patrick: Evil Awakens, a remake of the 1970s cult classic.

In 2014, Sergeant had roles in two American series, including playing the Jabberwocky in Once Upon a Time in Wonderland and Francesca Guerrera in The Originals. In the 2015 Australian miniseries The House of Hancock, Sergeant portrayed socialite Rose Porteous, opposite Sam Neill as her iron ore magnate husband Lang Hancock and Mandy McElhinney as his daughter Gina Reinhart. Her performance saw her nominated for an AACTA Award for Best Lead Actress in a Television Drama in 2015.

Sergeant landed a lead role as Julia in American crime drama series Snowfall, appearing in the series for six seasons, from 2017 to 2023. During this time, she had guest roles in American Woman (based on the life of socialite and television personality Kyle Richards) and Castle Rock. She also played Ezera in 2020 fantasy film Heavenquest: A Pilgrim's Progress She then joined The CW's Supergirl as Nyxly in its final season in 2021.

In 2026, Sergeant landed the voice role of Jie in American animated fantasy film Avatar Aang: The Last Airbender.

Sergeant began dating actor Rohan Nichol in 2002, after meeting while acting in a play at the Sydney Fringe Festival. In 2007, the pair relocated to LA for work for a period of time, before ultimately returning to Australia.

Sergeant married American author Jonathan Pitts on 2 October 2021. According to Sergeant's Instagram page, she had a miscarriage and then delivered a stillborn baby, before welcoming a healthy son on 16 February 2024.