Niamh Kate Blackshaw (born 19 November 1998) is an English actress. She made her television debut in a Mr Kipling advert before joining the ITV soap opera Coronation Street (2017) as Lara Cutler. She then played Juliet Nightingale in the Channel 4 soap opera Hollyoaks (2018–2023), for which she was nominated for Best Leading Performer at the 2023 British Soap Awards. Following her exit, she joined the cast of Waterloo Road (2025) as Agnes Eccleston.
She has been in a relationship with actor Angus Castle-Doughty since 2022.
After a cancer storyline was devised for her character, it was announced that Blackshaw would be leaving her role as Juliet in 2023, after five years on Hollyoaks. Following her exit, she was cast as Abi in the 2024 short film Hide. It was created by Ian Curtis, who had worked with Blackshaw on Hollyoaks. He wrote the character with her in mind and made the decision to donating 10% of the film's profits to Blackburn Food Bank, which Blackshaw's family help to run. Blackshaw then appeared in the BBC drama The Jetty, as well as being cast in the fifteenth series of Waterloo Road.
| 2017 | Coronation Street | Lara Cutler | 5 episodes |
| 2018 | Landline | Daughter | Short film |
| 2018–2023 | Hollyoaks | Juliet Nightingale | Regular role |
| 2023 | SnapCatch | Holly | Short film |
| 2024 | Hide | Abi | Short film |
| 2024 | The Jetty | Rosie | 2 episodes |
| 2025–present | Waterloo Road | Agnes Eccleston | Main role |
| 2019 | Inside Soap Awards | Best Newcomer | Hollyoaks | ||
| Inside Soap Awards | Best Partnership (with Lysette Anthony) | ||||
| 2021 | I Talk Telly Awards | Best Soap Partnership (with Ruby O'Donnell) | |||
| 2023 | The British Soap Awards | Best Leading Performer | |||
| National Television Awards | Serial Drama Performance | ||||
| Inside Soap Awards | Best Partnership (with O'Donnell) |
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