Milly AlcockActor Evolution · YouTube
Milly Alcock
Actress · Since 2018
Known for
International breakthrough as young Rhaenyra Targaryen in HBO's House of the Dragon (2022). An Australian actress trained in her country's theatre and television, with previous work in Upright (2019) and the miniseries Fighting Season (2018). Starred in Netflix's miniseries Sirens (2025) and was cast as Supergirl in Supergirl: Woman of Tomorrow (2026) for James Gunn's new DC universe. Her performance in House of the Dragon, despite being limited to the first half of the initial season, received widespread critical praise and positioned her as one of the most promising young performers on the contemporary international stage.
Milly Alcock
Actress · Since 2018
6 Movies · 11 Series
Known for
International breakthrough as young Rhaenyra Targaryen in HBO's House of the Dragon (2022). An Australian actress trained in her country's theatre and television, with previous work in Upright (2019) and the miniseries Fighting Season (2018). Starred in Netflix's miniseries Sirens (2025) and was cast as Supergirl in Supergirl: Woman of Tomorrow (2026) for James Gunn's new DC universe. Her performance in House of the Dragon, despite being limited to the first half of the initial season, received widespread critical praise and positioned her as one of the most promising young performers on the contemporary international stage.
TV Shows
Plays Meg Adams
Upright
2019
Plays Sam Serrato
Reckoning
2019
Plays Jenny McGinty
The Gloaming
2020
Plays Young Rhaenyra Targaryen
House of the Dragon
2022
Plays Isabella Barrett
High Life
2017
Plays Maya Nordenfelt
Fighting Season
2018
Plays Simone DeWitt
Sirens
2025
Plays Marissa Campbell
Pine Gap
2018
Plays Sian Galese
Les Norton
2019
Plays Cindi Jackson
Janet King
2014
Plays Teen Girl 1
Wonderland
2013
Latest Trailers
Watch Trailer
Supergirl
Full Filmography 17
Man of Tomorrow
Supergirl
2027
Supergirl
Supergirl
2026
Sirens
Simone DeWitt · 5 episodes
2025
Superman
Supergirl (uncredited)
2025
House of the Dragon
Young Rhaenyra Targaryen
2022–2024
The Gloaming
Jenny McGinty
2020
Furlough
Ella
2020
The Familiars
Alison
2020
Reckoning
Sam Serrato · 10 episodes
2019
Photos
Frequently Asked Questions
How old is Milly Alcock and where are they from?
Milly Alcock is 26 years old, born on April 11, 2000 in Sydney, New South Wales, Australia.
What are the most famous roles of Milly Alcock?
Milly Alcock is best known for roles in Superman, Supergirl, The School.
How many movies has Milly Alcock been in?
Over a 8-year career (since 2018), Milly Alcock has appeared in 6 movies and 11 TV shows.
What was Milly Alcock's first movie?
The career of Milly Alcock began with The School (2018).
What is Milly Alcock's most recent movie or series?
Milly Alcock's most recent release is Supergirl, which premiered on June 24, 2026.
What TV shows has Milly Alcock appeared in?
On television, Milly Alcock has appeared in House of the Dragon, The Tonight Show Starring Jimmy Fallon, Sirens, Upright.
Does Milly Alcock have any upcoming projects?
Yes, Milly Alcock's upcoming work includes: Man of Tomorrow (2027).
Milly Alcock
2000-04-11 · Sydney, New South Wales, Australia
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).