The Hollywood actor attended the Brazilian premiere of the How to Train Your Dragon live-action remake earlier this week.
At the end of the screening, Butler’s late mum, Margaret Coll, was honoured.
In a post shared to the 55-year-old’s Instagram page, it shows a slide reading: “Dedicated to the loving memory of Margaret Coll”.
The post was captioned: “Getting weird. Funny face. The boys. And in memory of my dearly beloved mother Margaret Coll.”
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Fans sent their condolences in the comments following the news.
One said: “Awe. So extremely sorry for the loss of your mama, Gerard. I remember seeing you mention a few months back that she was in the hospital.
“Prayers of peace, strength, and comfort for you and your family. I know how truly much you adored your mama.”
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A second added: “She’ll always be by your side, supporting you and loving you more than anyone else.
“And yes, she was definitely there with you, smiling, and making those funny faces.”
Meanwhile, a third commented: “Condolences for your loss.”
Butler is reprising his role as Stoick the Vast in the upcoming film.
It is set to be released in the UK on June 13.
