Acting
Milly Alcock
Born 2000-04-11
Sydney, New South Wales, Australia
Department: Acting
Biography
Amelia May Alcock (born 11 April 2000) is an Australian actress. She received an AACTA Award nomination for her performance in the Foxtel comedy-drama Upright (2019–2022). She gained wider recognition for starring as young Rhaenyra Targaryen in the HBO fantasy series House of the Dragon (2022–2024). Alcock is best known for portraying Kara Zor-El / Supergirl in the DC Universe, first making an uncredited appearance in Superman (2025). She reprised the role starring in Supergirl (2026).
Known For
Prominent works featuring Milly Alcock
TV
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House of the Dragon
2022
TMDB4.2
Movie
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Superman
2025
TMDB3.6
TV
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The Tonight Show Starring Jimmy Fallon
2014
TMDB2.9
Movie
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Supergirl
2026
TMDB3.4
TV
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Last Meals
2021
TMDB3.1
TV
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Sirens
2025
TMDB3.3
TV
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House of the Dragon: The House That Dragons Built
2024
TMDB4.0
TV
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Pine Gap
2018
TMDB3.4
TV
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Upright
2019
TMDB4.0
TV
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Reckoning
2019
TMDB3.3
Filmography & Credits
Complete career catalog (28 titles)
| Poster | Title | Character / Role | Type | Year |
|---|---|---|---|---|
 | Man of Tomorrow | Supergirl | Movie | 2027 |
 | The Making of Supergirl | Herself | Movie | 2026 |
 | Supergirl | Supergirl | Movie | 2026 |
 | Based Amy | Self / Appearance | Movie | 2025 |
| Based Amy | Executive Producer | Movie | 2025 |
 | Superman | Supergirl (uncredited) | Movie | 2025 |
 | Sirens | Simone DeWitt | TV Series | 2025 |
 | DC Studios Showcase: The Official Podcast | Self | TV Series | 2024 |
 | House of the Dragon: The House That Dragons Built | Self | TV Series | 2024 |
 | House of the Dragon | Young Rhaenyra Targaryen | TV Series | 2022 |
 | Last Meals | Self | TV Series | 2021 |
 | Furlough | Ella | Movie | 2020 |
 | The Familiars | Alison | Movie | 2020 |
 | The Gloaming | Jenny McGinty | TV Series | 2020 |
 | Upright | Meg Adams | TV Series | 2019 |
 | Reckoning | Sam Serrato | TV Series | 2019 |
 | Les Norton | Sian Galese | TV Series | 2019 |
 | Fighting Season | Maya Nordenfelt | TV Series | 2018 |
 | Pine Gap | Marissa Campbell | TV Series | 2018 |
 | The School | Jien | Movie | 2018 |
 | High Life | Isabella Barrett | TV Series | 2017 |
 | Janet King | Cindi Jackson | TV Series | 2014 |
 | The Tonight Show Starring Jimmy Fallon | Self - Guest | TV Series | 2014 |
 | Wonderland | Teen Girl 1 | TV Series | 2013 |
 | A Place to Call Home | Emma Carvolth | TV Series | 2013 |
| Thumb | Self / Appearance | Movie | — | |
| Hot Mother | Self / Appearance | Movie | — | |
| Untitled Kyoto Project | Ella | Movie | — |