Mairéad O'Neill
Born and raised in
New York City,
Mairéad O'Neill is an NYC & Boston based actor/singer/musician and all around creative. A member of SAG-AFTRA and an alum of LaGuardia Arts High School, she is completing her BFA at Boston University School of Theatre and is represented by Boals, Winnett & Associates Agency.
Recent credits include Caroline in I AND YOU at Penguin Repertory Theatre, directed by Broadway vet Tom Caruso. A champion of new work, she's developed projects at SpeakEasy Stage, Boston Playwrights Theatre, The Theater Center in NYC, and made her Boston regional theatre debut in the world premiere of SOFT STAR at Boston Playwright’s Theater.
Her voice can be heard in Gen-Z Media’s Webby & Peabody-winning 'Mars Patel' podcast and TOMORROW: The Continuing Adventures of Annie Warbucks (alongside Laura Benanti!). A devoted voice geek, her recorded work include demos, commercials, soundtracks, and she's performed at Feinstein's/54 Below thrice!
In 2025, Mairéad lived in Europe where she studied Shakespeare at LAMDA, and trained in clowning and Roy Hart voice work at the Accademia dell’Arte in Italy. Beyond the stage, she’s a certified Yoga Sculpt instructor, content creator, and shares to her 16k+ TikTok following @mayreedie.
Born and raised in New York City,
Mairéad O'Neill is an NYC & Boston based actor, singer, and all-around creative. A member of SAG-AFTRA and an alum of LaGuardia Arts High School, she is completing her BFA at Boston University School of Theatre and is represented by Boals, Winnett & Associates Agency.
Recent credits include Caroline in I AND YOU at Penguin Repertory Theatre, directed by Broadway vet Tom Caruso. A champion of new work, she's developed projects at SpeakEasy Stage, Boston Playwrights Theatre, The Theater Center in NYC, and made her Boston regional theatre debut in the world premiere of SOFT STAR at Boston Playwright’s Theater.
Her voice can be heard in Gen-Z Media’s Webby & Peabody-winning 'Mars Patel' podcast and TOMORROW: The Continuing Adventures of Annie Warbucks (alongside Laura Benanti!). A devoted voice geek, her recorded work include demos, commercials, soundtracks, and she's performed at Feinstein's/54 Below thrice!
In 2025, Mairéad lived in Europe where she studied Shakespeare at LAMDA, and trained in clowning and Roy Hart voice work at the Accademia dell’Arte in Italy. Beyond the stage, she’s a certified Yoga Sculpt instructor, content creator, and shares to her 16k+ TikTok following @mayreedie.
photos by YellowBelly
I was mesmerized by [O'Neill and Dougan's] electrifying stage presence, infused with controlled energy, unflagging focus, and the volatile chemistry of youth. They both “kill”... I’d be surprised if they did not ascend, as their craft continues to evolve, to more prominent public awareness.
BROADWAYWORLD review of two-hander "I And You" @ Penguin Repertory Theatre
Julie Boyd,
The New School
“She is flexible and creative.
She loves the arts and works to live as a lifelong student.
She will inspire by example.
She is a self-starter. She listens. She
makes helpful suggestions.
She is an incredibly talented actress… Treat yourself and hire her.”
Joe Brancato,
Artistic Director,
Penguin Rep
"Watching her hone her work on stage was inspiring for all the staff and designers...Her sincere and mature approach exhibited that rare quality of great work ethic and joy for the experience."
Tom Caruso,
Broadway Director
"I have directed Mairead and find her to be a brilliant actress with a top notch work ethic.
She is a true professional... exceedingly skilled and talented beyond her years."
