The Global Gatekeepers: Who Is Hosting Big Brother Across The World In 2025?

The iconic phrase, "Big Brother is watching," has echoed across continents for over two decades, but the face delivering the news, orchestrating the live eviction shows, and interviewing the housemates has changed dramatically depending on where you live. As of late 2024 and heading into the 2025 television season, the global reality competition show is helmed by a diverse and dynamic group of presenters, each bringing a unique energy to their respective franchises.

The role of the *Big Brother* host is one of the most demanding in television, requiring a mix of journalistic integrity, empathetic interviewer skills, and the ability to manage the chaos of a live broadcast. From the longest-running host in the US to the fresh faces of the UK revival and the new Australian gatekeeper, here is the definitive, up-to-date guide on who is currently hosting *Big Brother* around the world.

The Current Global Big Brother Hosts: A Complete Profile

The role of the host is central to the "social experiment," acting as the only true link between the housemates and the outside world. Here are the television personalities currently holding the reins for the world's biggest *Big Brother* franchises.

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1. Big Brother US: The Unwavering Legacy of Julie Chen Moonves

Julie Chen Moonves is, without a doubt, the longest-running and most consistent face of the *Big Brother* franchise globally. Since the show's debut in July 2000, she has hosted every single season of the CBS reality-television program, including the celebrity editions.

• Full Name: Julie Suzanne Chen Moonves
• Franchise: *Big Brother* (US) and *Celebrity Big Brother* (US)
• Tenure: Since July 2000 (Over 25 years)
• Current Status: Host of the upcoming *Big Brother* Season 27 (assumed)
• Notable Fact: Often referred to by fans as "Chenbot" for her early, more formal hosting style, she has embraced the nickname and evolved into a beloved figure in reality television. She is also an Emmy Award-Winning Television Personality and author.

Chen Moonves’s tenure is a remarkable feat in the often-volatile world of reality television. She has become synonymous with the show, delivering her signature sign-off, "But first, God," in recent years, cementing her legacy as a pioneer and an Asian American figure in broadcasting.

2. Big Brother UK: The Dynamic Duo of AJ Odudu and Will Best

Following a five-year hiatus, the *Big Brother UK* franchise was revived by ITV in 2023, bringing with it a brand new, energetic co-hosting partnership. AJ Odudu and Will Best were chosen to front the new era, quickly becoming the faces of both the civilian series and the subsequent *Celebrity Big Brother* revival in 2024.

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• Hosts: AJ Odudu and Will Best
• Franchise: *Big Brother* (UK) and *Celebrity Big Brother* (UK)
• Tenure: Since 2023 (ITV Revival)
• Current Status: Returning hosts for the 2024 series.
• AJ Odudu’s Background: A British television personality known for her vibrant presence, she previously co-hosted the spin-off show *Big Brother's Bit on the Side* with Rylan Clark.
• Will Best’s Background: An experienced TV presenter, Best has been a familiar face on UK television for years, making him the perfect complement to Odudu for the live eviction shows and companion show, *Big Brother: Late & Live*.

Their joint presentation style marks a departure from the solo hosting of predecessors like Davina McCall and Brian Dowling, injecting a fresh, collaborative energy into the beloved British format.

The North American and Oceanic Gatekeepers

While the US and UK franchises often dominate the global conversation, the Canadian and Australian versions of the reality competition show have established their own strong identities, led by equally compelling presenters.

3. Big Brother Canada: Arisa Cox, Host and Executive Producer

In Canada, the show is led by Arisa Cox, a figure who has grown her role beyond just presenting. Cox is celebrated for her deep connection to the series and her passionate engagement with the houseguests.

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• Full Name: Arisa Cox
• Franchise: *Big Brother Canada* (BBCAN)
• Tenure: Since 2013 (Season 1)
• Current Status: Host and Executive Producer for the series.
• Notable Fact: Cox transitioned from a career in journalism to become a television and radio personality. She is one of the few global *Big Brother* hosts who also holds an executive producer credit, giving her significant creative influence over the show’s direction.

Her dual role as both the host and an executive producer is a testament to her commitment to the franchise, allowing her to shape the narrative and social dynamics of the Canadian house. The show recently wrapped its 12th season, with Cox continuing to be the heart of the series.

4. Big Brother Australia: Welcoming the Newcomer, Mel Tracina

The Australian franchise is set for a major change, with a new host confirmed for the upcoming 2025 season. Mel Tracina, a comedian and broadcaster, is stepping into the iconic role, replacing previous hosts like Sonia Kruger and Gretel Killeen.

• Full Name: Mel Tracina
• Franchise: *Big Brother Australia*
• Tenure: Beginning 2025 (Season 16)
• Current Status: Newly announced host for the 2025 season on Network 10.
• Notable Fact: Tracina is a Melbourne-born broadcaster best known for her role as the Cultural Correspondent on Channel 10's comedy panel show, *The Cheap Seats*, and as a NOVA radio presenter. Her background in comedy is expected to bring a fresh, lighthearted tone to the Australian reality competition.

This change is part of a major revitalization for the Australian show, which is returning to its traditional format, including a brand-new house at the Gold Coast’s Dreamworld. Tracina's selection signals a renewed focus on entertainment and the classic *Big Brother* spirit.

The Enduring Legacy of Big Brother Presenters

The history of *Big Brother* hosting is almost as dramatic as the show itself, filled with memorable personalities who defined entire eras. The current hosts stand on the shoulders of giants who pioneered the reality competition show format.

In the UK, the original host, Davina McCall, remains a legendary figure. She hosted the show from its launch in 2000 until its initial run concluded in 2010. Her emotional delivery during the live eviction shows and her genuine connection with the housemates set the standard for all future presenters.

Following McCall, the UK series saw Brian Dowling, a former housemate and winner, take over the reins for the Channel 5 era, later followed by Emma Willis, whose presenting style was widely praised for its warmth and professionalism. These names—Davina McCall, Brian Dowling, and Emma Willis—form a crucial part of the show's topical authority and history, constantly referenced by the new generation of hosts, AJ Odudu and Will Best.

Meanwhile, in the US, the consistency of Julie Chen Moonves is a major outlier. Her unbroken run has created a singular identity for the American version, making the host itself an entity as iconic as the *Big Brother* house or the Diary Room.

The global lineup of hosts in 2025—Julie Chen Moonves, AJ Odudu, Will Best, Arisa Cox, and Mel Tracina—demonstrates the franchise's enduring power and its ability to adapt. Whether it's a long-standing veteran or a brand-new face, the host remains the crucial voice that welcomes the housemates, guides the drama, and ultimately crowns the winner of the world's greatest social experiment.