Masterson at the 2017 San Diego Comic-Con International.
|Relatives||Jordan Masterson (brother)|
Danny Masterson (maternal half-brother)
Christopher Masterson (maternal half-brother)
Will Masterson (stepbrother)
Masterson was born in New York City, New York, to Carol Masterson and Joe Reaiche, a former Lebanese-Australian professional rugby league footballer with the Sydney Roosters and the South Sydney Rabbitohs. She is the younger sister to her full brother, Jordan Masterson, and two half-brothers, Danny Masterson and Christopher Masterson. The family later relocated to Los Angeles, California. She grew up around and was influenced by her older brothers who both starred in popular television shows in the late 1990s to early 2000s. Masterson's passion for acting came from spending a lot of time on set with her brothers and seeing the filming process.
Masterson portrayed Tara Chambler on the AMC series The Walking Dead, having debuted in the show's fourth season. Masterson was promoted to a series regular for the fifth season and was added to the main credits in the seventh season. She had a recurring role in the fourth season of the ABC series Mistresses.
On November 4, 2015, Masterson gave birth to daughter Marlowe, with boyfriend Brick Stowell.
Masterson and her brothers are Scientologists and are estranged from their father, due to Scientology's Disconnection policy, also making him an SP (Suppressive Person) against the church and its members.
|2011||Peach Plum Pear||Dora Bell Hutchinson|
|1994–1995||The Young and Restless||Colleen Carlton||2 Episodes|
|2001||Definitely Maybe||Guest role|
|2006||Malcolm in the Middle||Heidi||Guest role|
|2009||Terminator: The Sarah Connor Chronicles||Zoe McCarthy||Guest role|
|2009||Grey's Anatomy||Hillary Boyd||Guest role|
|2010||First Day||Abby||Main role, 7 episodes|
|2012||Park It Up||Brenda||Guest role|
|2013–2019||The Walking Dead||Tara Chambler||Recurring (season 4)|
Also starring (seasons 5–6)
Starring (seasons 7–9)
|2014||Men at Work||Mopey Hipster Girl||Main role|
|2014–2019||Talking Dead||Herself||Guest, 6 episodes|
|2016||Mistresses||Lydia||Recurring (Season 4)|
|2018||Younger||Kiara Johnson||Recurring (Season 5)|
- "Alanna Masterson Biography". TVGuide.com. Archived from the original on July 6, 2015.
- Miller, Julie (July 29, 2015). "Walking Dead Star's Father Accuses Scientology of 'Brainwashing' Her in Damning New Interview". Vanity Fair. Archived from the original on August 14, 2015. Retrieved August 14, 2015.
- Hurtado, Alexandra. "Alanna Masterson talks return of 'Walking Dead' and how motherhood has given 'life a whole new purpose'". Hello!. Retrieved October 7, 2016.
- "Alanna Masterson Stays Weird". Interview. Retrieved October 7, 2016.
- DiClaudio, Dennis (September 27, 2013). "The Walking Dead also adds Alanna Masterson". The AV Club. Retrieved February 24, 2014.
- "'The Walking Dead' Q&A: Alanna Masterson Talks Tara". Access Hollywood. February 22, 2014. Retrieved February 24, 2014.
- Patten, Dominic (March 31, 2014). "AMC's 'Walking Dead' Adds Trio As Season 5 Regulars". Deadline.com. Retrieved March 31, 2014.
- "Is Another Actor Leaving 'Mistresses'? Rob Mayes Cast In New CW Drama 'Frequency'". FxTribune. Archived from the original on 2016-10-09. Retrieved October 7, 2016.
- Murphy, Desiree (November 13, 2015). "'Walking Dead' Star Alanna Masterson Gives Birth to First Child". Entertainment Tonight. CBS Television Distribution. Retrieved May 24, 2019.
- Miller, Julie (July 29, 2015). "Walking Dead Star's Father Accuses Scientology of 'Brainwashing' Her in Damning New Interview". Vanity Fair. Condé Nast. Retrieved May 24, 2019.