Milly Alcock

Actress
Producer

"Game of Thrones" prequel series "House of the Dragon" (2022 - ) will make Australian star Milly Alcock a household name, so IMDb presents this peek at her behind the scenes and at her earlier work like "Upright" and "The Gloaming."

Play clip1:50

All About Milly Alcock

Milly Alcock is an Australian actress who catapulted to global fame after starring as young Rhaenyra Targaryen in the first season of the HBO television series House of the Dragon (2022), a prequel to HBO's Game of Thrones (2011). For the role, Alcock received a nomination for Critics' Choice Television Award for Best Supporting Actress in a Drama Series. She is also known for Upright (2019), for which she was nominated for Best Comedy Performer at the 10th AACTA Awards. She's appeared in TV shows Janet King (2014), A Place to Call Home (2013), Pine Gap (2018), Fighting Season (2018), Les Norton (2019), Reckoning (2019), and The Gloaming (2020).

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Awards
- 2 wins & 8 nominations total

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Photos

Photos140

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Known for

Supergirl

5.8

Supergirl

2026

Steve Toussaint, Phia Saban, Matt Smith, Olivia Cooke, Tom Glynn-Carney, Harry Collett, Ewan Mitchell, Emma D'Arcy, Bethany Antonia, and Phoebe Campbell in House of the Dragon (2022)

House of the Dragon

8.3

TV Series

Young Rhaenyra Targaryen

Upright

8.4

TV Series

Meg Adams

Pine Gap

7.2

TV Mini Series

Marissa Campbell

Credits

IMDbPro

Actress

Supergirl
5.8
- Supergirl
- 2026
The Summer Oath
6.8
Podcast Series
- Eloise
- 2026
Based Amy
3.6
Short
- 2025
Superman
7.0
- Supergirl
- Kara Zor-El (uncredited)
- 2025
Sirens
6.7
TV Mini Series
- Simone DeWitt
- 2025
House of the Dragon
8.3
TV Series
- Young Rhaenyra Targaryen
- 2022–2024
Upright
8.4
TV Series
- Meg Adams
- 2019–2022
Furlough
6.2
Short
- Ella
- 2020
The Familiars
6.2
Short
- Alison
- 2020
Reckoning
6.6
TV Mini Series
- Sam Serrato
- 2019–2020
The Gloaming
6.6
TV Mini Series
- Jenny McGinty
- 2020
Les Norton
7.1
TV Mini Series
- Sian Galese
- 2019
Fighting Season
6.9
TV Mini Series
- Maya Nordenfelt
- 2018
Pine Gap
7.2
TV Mini Series
- Marissa Campbell
- 2018
A Place to Call Home
8.3
TV Series
- Emma Carvolth
- 2018

Producer

Videos21

Clip 4:18

How Milly Alcock's 'Supergirl' Finds Strength Through Her Flaws

Clip 4:06

Meghann Fahy and Milly Alcock Talk "Sirens," Supergirl and Inspiring Roles

Clip 4:06

Meghann Fahy and Milly Alcock Talk "Sirens," Supergirl and Inspiring Roles

Clip 0:54

"Mind Merge"

Clip 1:31

Fixing the Iron Throne: "House of the Dragon" Cast on Their Ideal Royal Seat

Clip 2:34

Casting the "House of the Dragon" Parody on "Sesame Street"

Clip 2:51

The "House of the Dragon" Cast Pick Their Roles at a Family Dinner

Personal details

Official site
- Instagram
Height
- 5′ 5″ (1.65 m)
Born
- April 11, 2000
- Sydney, Australia
Relatives
Other works
Stage Play: The Crucible - playing Abigail Williams, at the Gielgud Theatre, London, England
Publicity listings
- 3 Articles

Did you know

Trivia
The fifth actress to portray Kara Zor-El/Supergirl in live-action and the third in film.

Quotes
[on choosing to not look for guidance from previous onscreen Supergirls] They're just people living their lives. It's not like we have this blood bond.