Matthew Karlsson Age, Biography & Facts

Matthew Karlsson is a 37-year-old property investor from Victoria who entered Big Brother Australia Season 17 on Day 1 as one of the season’s 14 housemates. He describes himself as “unique” and a “chameleon” who diffuses tension in the house with breakdancing, and he quickly became one of the season’s most talked-about housemates. As of November 9, 2026, Matthew is still participating in the house, with 11 housemates remaining. Week 3 update — November 2026: Matthew was nominated for elimination alongside Heath Slater and Austin Hendrey (vote to save), after the “Maltesergate” snack storyline — eating rationed snacks, then questioning others — made him unpopular with some viewers.

Quick Facts

Full Name	Matthew Karlsson
Known For	Big Brother Australia 2026
Age	37
Hometown	Victoria
Occupation	Property investor
Partner	No public information available

Who Is Matthew Karlsson?

Matthew Karlsson is a property investor from Victoria, Australia, who became known to viewers as a housemate on Big Brother Australia Season 17 in 2026. He entered the house on Day 1 and presented himself as someone who can adapt to almost any situation, calling himself “unique” and a “chameleon”. That self-description has shaped how viewers have read his game: rather than taking a fixed role in the house, Matthew moves between groups, lightens tense moments and tries to keep the mood up, often by breakdancing when the atmosphere turns serious.

Within the first two weeks, Matthew was at the centre of several of the season’s biggest storylines. He was nominated in Week 2, saved by Head Housemate Ebony Vandermont, and then saved by Ebony again on November 8, a decision that sent his close friend Pheobe Joyce out of the house instead. He was also central to the house’s “Maltesergate” snack storyline, after eating rationed snacks and then calling a house meeting about the snacks that had gone missing. Those moments made him one of the most discussed housemates of the season, and they explain why his name has been prominent in coverage of the show as it heads into its later weeks.

Early Life & Background

Public sources list Matthew Karlsson as 37 years old and from Victoria, and describe his occupation as a property investor. No date of birth, height or net worth has been published in reliable sources, so those details are not included here. What the show has made clear is the way Matthew presents himself: as a confident, adaptable person who is comfortable being the centre of attention and who uses humour and movement, especially breakdancing, to break tension. That approach has become his signature in the house, and it is the quality other housemates have commented on most often when they talk about him.

Before Big Brother, Matthew was not a public figure in the usual sense. His profile on the show is built around his work in property and his personality, rather than a previous television career, which is why his time in the house has been his introduction to most viewers. The season’s coverage has focused on how he handles the social game, how he responds when he is nominated, and how he manages friendships that are tested by the game’s twists.

Big Brother Australia Journey

Matthew entered the Big Brother Australia house on Day 1, as one of 14 housemates in Season 17. His first major moment came on Day 8, during the Trick or Treat task, when he chose “Treat” and added $25,000 to the prize fund, taking it to $125,000. It was a popular move in the house, and it put Matthew at the centre of the season’s prize-money story early on.

In Week 2, Matthew was nominated for eviction, but Head Housemate Ebony Vandermont used her save power on him, with Ryan Macri put up in his place. That save established Ebony as a key ally for Matthew, and it also set up one of the season’s recurring themes: Matthew’s survival has repeatedly depended on the Head Housemate’s decisions. The snack storyline that became known as “Maltesergate” added another layer, after Matthew ate rationed snacks and then called a house meeting about the missing snacks, a moment that divided opinion in the house and among viewers.

On November 8, Ebony saved Matthew again with her Head Housemate power, this time leaving Pheobe Joyce to be evicted. Pheobe, who was Matthew’s closest friend in the house and the season’s third evictee on Day 15, told host Mel Tracina she felt betrayed by the decision, while later telling TV WEEK she still loves and respects Ebony and hopes Kyrah wins. Matthew remains in the house as of November 9, 2026, with 11 housemates remaining, and his game now turns on whether the alliances that have saved him twice can carry him further into the season.

Facts About Matthew Karlsson

• Matthew Karlsson is 37 years old and from Victoria, Australia.
• He entered Big Brother Australia Season 17 on Day 1.
• He describes himself as “unique” and a “chameleon” who diffuses tension with breakdancing.
• On Day 8, he chose “Treat” in the Trick or Treat task, adding $25,000 to the prize fund and taking it to $125,000.
• He was central to the “Maltesergate” snack storyline, after eating rationed snacks and then calling a house meeting about the missing snacks.

Frequently Asked Questions

How old is Matthew Karlsson?

Matthew Karlsson is 37 years old.

Where is Matthew Karlsson from?

Matthew Karlsson is from Victoria, Australia.

What does Matthew Karlsson do for a living?

Matthew Karlsson is a property investor.

Is Matthew Karlsson still on Big Brother Australia?

Yes. As of November 9, 2026, Matthew Karlsson is still participating in Big Brother Australia Season 17, with 11 housemates remaining.

Who saved Matthew Karlsson on Big Brother?

Head Housemate Ebony Vandermont saved Matthew Karlsson in Week 2 and again on November 8, 2026, when Pheobe Joyce was evicted instead.

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