Milly Alcock
Biography
Amelia May Alcock, known professionally as Milly Alcock, is an Australian actress born on April 11, 2000, in Sydney, New South Wales. She has established herself as a rising talent within the global entertainment industry. Alcock is recognized for her work across television and film, gaining significant international attention for her high-profile roles in major fantasy and superhero franchises. Throughout her career, she has been noted for her adaptable performances and strategic professional choices. As of 2026, she is twenty-six years old. Her professional journey reflects a transition from Australian television productions to prominent roles in large-scale international projects, marking her as a notable figure in the current generation of actors.
Career overview
Milly Alcock began her career in Australia, where she earned an AACTA Award nomination for her performance in the Foxtel comedy-drama series Upright, which aired from 2019 to 2022. She achieved wider recognition and global fame for her portrayal of young Rhaenyra Targaryen in the HBO fantasy series House of the Dragon, a prequel to Game of Thrones. Her performance in this role earned her a nomination for a Critics' Choice Television Award for Best Supporting Actress in a Drama Series.
In 2026, Alcock expanded her filmography into the superhero genre by playing the character Kara Zor-El, also known as Supergirl, in James Gunn's DCU. This role followed an uncredited cameo appearance as the character in the 2025 film Superman. Her career trajectory demonstrates a progression from domestic television work to starring roles in major international studio productions.
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Frequent co-stars
Career timeline
Full filmography
- Man of Tomorrow (2027) as Supergirl
- Supergirl (2026) as Supergirl
- Superman (2025) as Supergirl (uncredited)
- Sirens (2025) as Simone DeWitt
- Based Amy (2025)
- Based Amy (2025) Executive Producer
- DC Studios Showcase: The Official Podcast (2024) as Self
- House of the Dragon (2022) as Princess Rhaenyra Targaryen
- The House That Dragons Built (2022) as Self
- Last Meals (2021) as Self
- The Gloaming (2020) as Jenny McGinty
- Furlough (2020) as Ella
- The Familiars (2020) as Alison
- Upright (2019) as Meg Adams
- Les Norton (2019) as Sian Galese
- Reckoning (2019) as Sam Serrato
- Pine Gap (2018) as Marissa Campbell
- The School (2018) as Jien
- Fighting Season (2018) as Maya Nordenfelt
- High Life (2017) as Isabella Barrett
- The Tonight Show Starring Jimmy Fallon (2014) as Self - Guest
- Janet King (2014) as Cindi Jackson
- A Place to Call Home (2013) as Emma Carvolth
- Wonderland (2013) as Teen Girl 1
- Hot Mother
- Untitled Kyoto Project as Ella
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