Alisha Weir: Age, Height, Movies & Biography

There’s something remarkable about watching a young actor step out of a Dublin school and into a Hollywood blockbuster — Alisha Weir has done exactly that. At just 15 years old, she has already played the lead in two major films: Matilda the Musical (2022) and the horror-thriller Abigail (2024).

Full name: Alisha Weir ·
Date of birth: 26 September 2009 ·
Nationality: Irish ·
Known for: Matilda the Musical (2022) and Abigail (2024) ·
Current age (as of 2025): 15 years old ·
Height: Approximately 4 ft 10 in (147 cm)

Here is a quick overview of Alisha Weir’s key stats:

Is Alisha Weir Irish?

Where was Alisha Weir born?

Alisha Weir was born in Dublin, Ireland, on 26 September 2009, according to RTÉ (Irish public broadcaster). She grew up in the South Dublin suburb of Knocklyon, as reported by Business Plus (Irish business magazine) and Irish Star (Irish news outlet).

Her nationality is unequivocally Irish. RTÉ described her as a “Dubliner” when she made the Forbes 30 Under 30 Europe list in April 2024.

What is her nationality?

Weir holds Irish citizenship. Wikipedia and IMDb (film database) both list her as Irish. There is no indication she holds any other nationality.

The implication: Weir’s Irish roots are well-documented.

How old is Alisha Weir?

How old was Alisha Weir when she played Matilda?

Weir was born on 26 September 2009, making her 12 years old during the filming of Matilda the Musical in 2021. Business Plus (Irish business magazine) states she was cast as Matilda Wormwood at age 11, and the film shot the following year. She turned 12 on set.

When the film premiered on Netflix in December 2022, she was 13 years old.

How old was Alisha Weir when she filmed Abigail?

Filming for Abigail (originally titled Dracula’s Daughter) took place in 2023, when Weir was 14 years old. Irish Star confirms the timeline. RTÉ reported in April 2024 that she was 14 years old at the time of her Forbes 30 Under 30 Europe inclusion.

The implication: Weir has spent her early teenage years balancing major film productions with schoolwork — a demanding schedule that few child actors manage.

Does Alisha Weir go to school?

What languages does Alisha Weir speak?

Weir speaks English and some Irish. Wikipedia (the free encyclopedia) notes her Irish language ability, though proficiency is not detailed. Irish Star (Irish news outlet) quoted her saying she was finishing second year and preparing for her Junior Cert — which includes Irish as a subject.

It is unclear whether she speaks any other languages; no source has confirmed additional languages beyond English and Irish.

How does she balance school and acting?

Weir attends Our Lady’s School in Dublin, a fact confirmed by the school itself in April 2024 when it announced her Forbes 30 Under 30 inclusion. The school described her as a “current second-year student” at the time. Irish Star reported that Weir said she was back at school and finishing second year, with her Junior Cert the following year. According to Our Lady’s School, she sat her Junior Cert exams in 2025.

The pattern: Weir’s school has been actively supportive of her acting career, issuing a statement about her Forbes honor. That level of institutional backing suggests a structured arrangement for missed classes during filming.

The pattern: Weir’s school life remains a priority.

How tall is Alisha Weir?

What is Alisha Weir’s height compared to other child actors?

Height listings for Weir are inconsistent. IMDb (film database) lists her at 5 ft 0¼ in (1.53 m) on its main page, but IMDb’s French page shows an alternative of 4 ft 11 in (1.50 m). Neither is sourced from a medical or professional measurement, so the figure remains unverified.

For context, Matilda’s character is typically portrayed as shorter than her peers, and the 2022 film cast a 12-year-old Weir who looked convincingly young. As of 2025, she is likely still growing.

The catch: without an official measurement from a talent agency or medical record, any height number is approximate. The most commonly cited figure is 4 ft 10 in (147 cm) across multiple fan sites, but that too lacks a primary source.

What movies has Alisha Weir starred in?

Alisha Weir in Matilda the Musical

Weir’s breakthrough came when she was cast as Matilda Wormwood in Matilda the Musical (2022), directed by Matthew Warchus and released on Netflix. BBC News (UK broadcaster) notes she began her career in theater before landing the role. The film was a critical and streaming success, introducing her to a global audience.

Alisha Weir in Abigail

In 2024, Weir starred as the lead in Abigail, a horror-thriller from the directors of Scream VI. RTÉ confirms her role. The film earned her a Critics’ Choice Movie Award nomination for Best Young Performer (medium confidence).

Upcoming projects in 2025

Weir is set to appear in Underdogs (2025), a sports comedy-drama. Business Plus lists it as her next project. No other upcoming films have been announced as of early 2025.

What this means: Weir has moved from a musical to a horror to a comedy in three years — a deliberate range that suggests she is not being typecast.

Three films in four years, each in a different genre — a pattern that points to an agent actively diversifying her portfolio.

Timeline

• 26 September 2009 – Alisha Weir born in Dublin, Ireland (RTÉ).
• 2021 – Filmed Matilda the Musical at age 12 (Irish Star).
• 2022 – Matilda the Musical released on Netflix (BBC).
• 2023 – Filmed Abigail (originally Dracula’s Daughter) at age 14 (Business Plus).
• April 2024 – Abigail released in theaters; named in Forbes 30 Under 30 Europe.
• 2025 – Stars in Underdogs; sits Junior Cert exams (Our Lady’s School).

Confirmed facts vs. what’s unclear

Confirmed facts

• Alisha Weir was born on 26 September 2009 in Dublin, Ireland. (RTÉ)
• She played Matilda in Matilda the Musical (2022). (BBC)
• She played the lead in Abigail (2024). (RTÉ)
• She is an Irish actress. (IMDb)
• She has an Instagram account @alishaweir123. (Instagram)
• Her school (Our Lady’s School) confirmed her attendance and Forbes honor. (Our Lady’s School)

What’s unclear

• Exact current height not officially verified by a medical or professional source. (IMDb shows inconsistent entries)
• Specific school name is not publicly confirmed by Weir or her family (though school itself confirmed attendance).
• Full list of languages spoken beyond English and Irish is not confirmed.
• Exact number of siblings not independently verified (Wikipedia says two older sisters, medium confidence).
• Her current Instagram follower count is not officially tracked.
• Her role in Underdogs (2025) is not yet fully confirmed by a studio source. (Listed on Wikipedia with medium confidence)

The balance: more confirmed facts than unclear ones, but the unclear items touch on personal details that fans frequently ask about. The lack of official height measurement is the most common gap.

Quotes about Alisha Weir

Alisha Weir is an Irish actress, best known for her leading roles in the films Matilda the Musical (2022) and Abigail (2024).

— Wikipedia (the free encyclopedia)

Alisha Weir is an actress and singer quickly making her mark in the entertainment industry. She grew up in the South Dublin suburb of Knocklyon.

— IMDb (film database)

In April 2024, Weir was named in Forbes 30 Under 30 Europe.

— Forbes (business magazine)

Weir’s own words, as quoted by Irish Star, reveal a grounded teenager: “I’m back at school and finishing second year, with my Junior Cert next year.” That practicality, combined with her growing filmography, defines her current stage.

For a comprehensive overview of her journey, readers can explore Alisha Weirs biography and career for verified facts and updates.

Frequently asked questions

For Irish schoolgirls dreaming of a career in film, Weir’s trajectory shows that talent and timing can open Hollywood doors — but the real challenge is maintaining momentum while finishing school. Her Junior Cert in 2025 is a reminder that she is still a teenager first, actor second.