# Big Brother (Australian TV series) season 15

Big Brother Australia 15, also known as Big Brother Australia 2023, was the fifteenth season of the Australian reality television series Big Brother. The season began airing on 6 November 2023 on Seven Network. Sonia Kruger returned as the host of the show. The series was initially teased as Big Brother: House of Love and featured a younger cast consisting of single housemates.
On 6 December 2023 Tay & Ari Wilcoxson won the series becoming the second joint-housemate winners in the history of the Australian version of Big Brother, after the Logan twins won season 5.

## Production

In October 2022 Seven Network announced that Big Brother would return for a fifteenth season. It was initially given the title Big Brother: House of Love and was teased to feature "a younger cast of sexy singles looking for love". The format was criticised on social media by viewers who said [the show] really needed to go back to the old Big Brother [format]". The series was again pre-recorded, and filming began on 31 October 2022. Following the criticism, the "House of Love" title was dropped, and after the conclusion of filming Seven Network described the series as the "spiciest yet" and a "more stripped-back, traditional Big Brother, where the cast is younger". It was also confirmed that the spin-off show Big Brother Uncut would return after seventeen years, having last aired during the sixth season. The season ran for 25 days, the shortest civilian season in Big Brother Australia history.
The season ended in a pre-recorded finale, similar to Big Brother VIP, where three possible endings were filmed for each of the finalist ahead of time with the outcome of Australia's vote determining which was broadcast.

### International broadcast

The season aired in New Zealand, with episodes being made available via TVNZ+ the day after their broadcast in Australia. The Uncut episodes were not made available.

## Housemates

The housemates were revealed in October 2023 and were described by Seven Network as the "sexiest housemates in Australia".
| Name | Age on entry | Residence | Day entered | Day exited | Result |
| Tay & Ari Wilcoxson | 23 & 20 | Queensland | 1 | 25 | Winners |
| Louis Phillips | 23 | Melbourne, Victoria | 1 | 25 | Runner-up |
| Mineé Marx | 22 | Perth, Western Australia | 1 | 25 | Runner-up |
| Taylah Davies | 27 | Victoria | 1 | 24 | Evicted |
| Josh Everett | 28 | Sydney, New South Wales | 1 | 23 | Evicted |
| Dion Prasad | 26 | Melbourne, Victoria | 1 | 22 | Evicted |
| Lewis Beers | 26 | Victoria | 1 | 22 | Evicted |
| Graciemae Sinclair | 26 | New South Wales | 1 | 19 | Evicted |
| Teejay Halkias | 26 | Brisbane, Queensland | 5 | 19 | Evicted |
| Oli Walton | 24 | Perth, Western Australia | 11 | 16 | Evicted |
| Jake Vella | 25 | Victoria | 1 | 15 | Evicted |
| Maddi-Rose McGuire | 19 | Central Coast, New South Wales | 11 | 15 | Walked |
| Bella Sommers | 25 | Melbourne, Victoria | 5 | 12 | Evicted |
| Zach Davis | 22 | Victoria | 1 | 9 | Evicted |
| Luke Hallinan | 33 | Sydney, New South Wales | 1 | 9 | Evicted |
| Annelise Drake | 24 | Gold Coast, Queensland | 1 | 7 | Evicted |
| AnnaSophia Lambrou | 30 | New South Wales | 1 | 5 | Evicted |
| Quan Ja | 33 | Victoria | 1 | 3 | Evicted |

## King and Queen of the House

Introduced on Day 2 was the title of "King and Queen of the House". The house will elect a King and a Queen, who will have access to the Suite.
| Week | King | Queen |
| 1 | Josh | Tay |
| 2 | Teejay | Bella |
| 3 | Louis | Mineé |
| 4 | Lewis | Graciemae |
| 5 | Josh | Tay |

## Episodes

| No. overall | No. in season | Title | Day(s) | Original air date | Australian viewers |
| Week 1 ||||||
| 1617 | 1 | Episode 1 | Days 1–2 | 6 November 2023 (2023-11-06) | 274,000 |
| 1618 | 2 | Episode 2 | Day 3 | 7 November 2023 (2023-11-07) | 213,000 |
| 1619 | 3 | Episode 3 | Days 3–4 | 8 November 2023 (2023-11-08) | 212,000 |
| 1620 | 4 | Episode 4 | Days 5–6 | 9 November 2023 (2023-11-09) | 183,000 |
| 1621 | 5 | Episode 5 – Uncut | Days 1–6 | 9 November 2023 (2023-11-09) | N/A |
| Week 2 ||||||
| 1622 | 6 | Episode 6 | Days 6–7 | 13 November 2023 (2023-11-13) | 156,000 |
| 1623 | 7 | Episode 7 | Day 8 | 14 November 2023 (2023-11-14) | 130,000 |
| 1624 | 8 | Episode 8 | Day 9 | 15 November 2023 (2023-11-15) | 112,000 |
| 1625 | 9 | Episode 9 | Days 10–11 | 15 November 2023 (2023-11-15) | 86,000 |
| 1626 | 10 | Episode 10 – Uncut | Days 7–11 | 16 November 2023 (2023-11-16) | N/A |
| Week 3 ||||||
| 1627 | 11 | Episode 11 | Days 11–13 | 20 November 2023 (2023-11-20) | 134,000 |
| 1628 | 12 | Episode 12 | Day 14 | 21 November 2023 (2023-11-21) | 128,000 |
| 1629 | 13 | Episode 13 | Day 15 | 22 November 2023 (2023-11-22) | 121,000 |
| 1630 | 14 | Episode 14 | Day 16 | 22 November 2023 (2023-11-22) | 91,000 |
| 1631 | 15 | Episode 15 – Uncut | Days 11–15 | 23 November 2023 (2023-11-23) | N/A |
| Week 4 ||||||
| 1632 | 16 | Episode 16 | Days 16–17 | 27 November 2023 (2023-11-27) | 169,000 |
| 1633 | 17 | Episode 17 | Days 17–18 | 28 November 2023 (2023-11-28) | 134,000 |
| 1634 | 18 | Episode 18 | Day 19 | 29 November 2023 (2023-11-29) | 138,000 |
| 1635 | 19 | Episode 19 | Days 21–22 | 29 November 2023 (2023-11-29) | 97,000 |
| 1636 | 20 | Episode 20 – Uncut | Days 16–19 | 30 November 2023 (2023-11-30) | N/A |
| Week 5 – Grand Final Week ||||||
| 1637 | 21 | Episode 21 | Day 22 | 4 December 2023 (2023-12-04) | 135,000 |
| 1638 | 22 | Episode 22 | Days 22–23 | 4 December 2023 (2023-12-04) | 96,000 |
| 1639 | 23 | Episode 23 – Top 3 Reveal | Day 24 | 5 December 2023 (2023-12-05) | 142,000 |
| 1640 | 24 | Episode 24 – Uncut | Day 1–24 | 5 December 2023 (2023-12-05) | N/A |
| 1641 | 25 | Episode 25 – Finale | Day 25 | 6 December 2023 (2023-12-06) | 152,000 |

## Voting history
### Key

    This housemate was nominated for eviction.
    This housemate was the nominating Housemate on this round.
    This housemate was immune from this round of eviction due to a twist.
    This housemate won the challenge and is immune for this round of eviction.
    This housemate was originally nominated but won a second chance and was thus saved from eviction.
| | Week 1 | Week 1 | Week 1 | Week 2 | Week 2 | Week 2 | Week 3 | Week 3 | Week 3 | Week 3 | Week 4 | Week 4 | Week 4 | Week 4 | Week 5 | Week 5 | Week 5 | Week 5 |
| Episode | 2 | 3 | 4 | 6 | 7 | 8 | 11 | 12 | 13 | 14 | 16 | 17 | 18 | 18 | 21 | 22 | 23 | Finale |
| Challenge Winner(s) | Luke | (none) | Annelise | Graciemae Luke | (none) | (none) | Tay & Ari | (none) | (none) | (none) | Josh Tay & Ari | (none) | (none) | (none) | Mineé | Mineé | Louis | (none) |
| Against House Vote | Jake Quan Zach | All Housemates | AnnaSophia Zach | Annelise Josh Louis | All Housemates | Bella Luke Taylah Zach | Bella Jake Taylah | All Housemates | Jake Maddi-Rose Oli Teejay | Oli Teejay | Graciemae Mineé Taylah | All Housemates | Dion Taylah Teejay | Graciemae Mineé | Dion Josh Lewis | Josh Tay & Ari Taylah | Mineé Tay & Ari Taylah | (none) |
| Vote to: | Evict | Nominate | Evict | Evict | Nominate | Evict | Evict | Nominate | Evict | Evict | Evict | Nominate | Evict | Evict | Evict | Evict | Evict | Win |
| Tay & Ari | Quan | AnnaSophia | AnnaSophia | Annelise | Bella Luke | Luke | Nominating Housemate | Jake | Jake | Oli | Nominating Housemate | Teejay | Taylah | Not eligible | Lewis | Taylah | Nominated | Winners (Day 25) |
| Louis | Quan | N/A | AnnaSophia | Annelise | Luke Zach | Luke | Bella | Maddi-Rose Oli | Oli | Oli | Graciemae | Dion | Dion | Mineé (to stay) | Dion | Josh | Taylah | Runner-up (Day 25) |
| Mineé | Zach | AnnaSophia | AnnaSophia | Annelise | Luke Zach | Luke | Bella | N/A | Jake | Teejay | Graciemae | In Half House | Teejay | Nominated | Nominating Housemate | Josh | Nominated | Runner-up (Day 25) |
| Taylah | Zach | N/A | Zach | Josh | Luke | In BB Speakeasy | Jake | N/A | Jake | Oli | Mineé | Teejay Tay & Ari | Teejay | Not eligible | Josh | Josh | Nominated | Evicted (Day 24) |
| Josh | Quan | Mineé | AnnaSophia | Annelise | Luke Taylah | Luke | Jake | Oli | Oli | Oli | Nominating Housemate | Teejay | Teejay | Not eligible | Lewis | Taylah | Evicted (Day 23) | Evicted (Day 23) |
| Dion | Zach | Annelise | AnnaSophia | Louis | Luke Mineé | In BB Speakeasy | Bella | Oli | Jake | Oli | Graciemae | Louis | Teejay | Not eligible | Lewis | Evicted (Day 22) | Evicted (Day 22) | Evicted (Day 22) |
| Lewis | Zach | N/A | AnnaSophia | Annelise | Luke | Luke | Bella | N/A | Oli | Oli | Mineé | Dion | Dion | Graciemae (to evict) | Dion | Evicted (Day 22) | Evicted (Day 22) | Evicted (Day 22) |
| Graciemae | Quan | Louis Annelise | AnnaSophia | Nominating Housemate | Luke | Luke | Bella | N/A | Jake | Oli | Mineé | In Half House | Teejay | Nominated | Evicted (Day 19) | Evicted (Day 19) | Evicted (Day 19) | Evicted (Day 19) |
| Teejay | Not in House | Not in House | Not in House | Annelise | Luke Taylah | Luke | Jake | Jake | Oli | Nominated | Graciemae | Dion Taylah | Dion | Evicted (Day 19) | Evicted (Day 19) | Evicted (Day 19) | Evicted (Day 19) | Evicted (Day 19) |
| Oli | Not in House | Not in House | Not in House | Not in House | Not in House | Not in House | Bella | Teejay | Jake | Nominated | Evicted (Day 16) | Evicted (Day 16) | Evicted (Day 16) | Evicted (Day 16) | Evicted (Day 16) | Evicted (Day 16) | Evicted (Day 16) | Evicted (Day 16) |
| Jake | Quan | Taylah | AnnaSophia | Annelise | Luke | Luke | Taylah | Teejay | Oli | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) | Evicted (Day 15) |
| Maddi-Rose | Not in House | Not in House | Not in House | Not in House | Not in House | Not in House | Bella | N/A | Nominated | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) | Walked (Day 15) |
| Bella | Not in House | Not in House | Not in House | Josh | Luke | Luke | Jake | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) | Evicted (Day 12) |
| Zach | Quan | N/A | Nominated | Annelise | Luke | Luke | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) |
| Luke | Nominating Housemate | Zach | AnnaSophia | Nominating Housemate | Louis | Zach | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) | Evicted (Day 9) |
| Annelise | Quan | Zach | AnnaSophia | Louis | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) | Evicted (Day 7) |
| AnnaSophia | Jake | Louis | Nominated | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) | Evicted (Day 5) |
| Quan | Zach | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) | Evicted (Day 3) |
| Notes | | | | [lower-alpha 4] [lower-alpha 5] | | [lower-alpha 7] [lower-alpha 8] | none | | [lower-alpha 10] [lower-alpha 11] | | [lower-alpha 12] [lower-alpha 4] [lower-alpha 13] | | | | | none | | |
| Source | | | | | | | | | | | | | | | | | | |
| Walked | none | none | none | none | none | none | none | none | Maddi-Rose | none | none | none | none | none | none | none | none | none |
| Vote Outcome | Quan 7 of 13 votes to evict | Zach 7 nominations | AnnaSophia 10 of 11 votes to evict | Annelise 8 of 12 votes to evict | Luke 12 nominations | Luke 10 of 11 votes to evict | Bella 7 of 12 votes to evict | Maddi-Rose 8 nominations | Jake 6 of 11 votes to evict | Oli 7 of 8 votes to evict | Graciemae 4 of 7 votes to fake evict | Dion 4 nominations | Teejay 4 of 8 votes to evict | Graciemae Lewis's choice to evict | Lewis 3 of 6 votes to evict | Josh 3 of 5 votes to evict | Taylah Louis's choice to evict | Louis Fewest votes to win |
| Vote Outcome | Quan 7 of 13 votes to evict | AnnaSophia 5 nominations | AnnaSophia 10 of 11 votes to evict | Annelise 8 of 12 votes to evict | Taylah Zach 4 nominations | Luke 10 of 11 votes to evict | Bella 7 of 12 votes to evict | Oli 6 nominations | Jake 6 of 11 votes to evict | Oli 7 of 8 votes to evict | Graciemae 4 of 7 votes to fake evict | Taylah 4 nominations | Teejay 4 of 8 votes to evict | Graciemae Lewis's choice to evict | Lewis 3 of 6 votes to evict | Josh 3 of 5 votes to evict | Taylah Louis's choice to evict | Louis Fewest votes to win |
| Vote Outcome | Quan 7 of 13 votes to evict | AnnaSophia 5 nominations | AnnaSophia 10 of 11 votes to evict | Annelise 8 of 12 votes to evict | Taylah Zach 4 nominations | Zach 1 of 11 votes to evict | Bella 7 of 12 votes to evict | Jake 5 nominations | Jake 6 of 11 votes to evict | Oli 7 of 8 votes to evict | Mineé 3 of 7 votes to fake evict | Taylah 4 nominations | Teejay 4 of 8 votes to evict | Graciemae Lewis's choice to evict | Dion 2 of 6 votes to evict | Josh 3 of 5 votes to evict | Taylah Louis's choice to evict | Mineé Fewest votes to win |
| Vote Outcome | Quan 7 of 13 votes to evict | Annelise 5 nominations | AnnaSophia 10 of 11 votes to evict | Annelise 8 of 12 votes to evict | Bella 3 nominations | Zach 1 of 11 votes to evict | Bella 7 of 12 votes to evict | Teejay 2 nominations | Jake 6 of 11 votes to evict | Oli 7 of 8 votes to evict | Mineé 3 of 7 votes to fake evict | Teejay 4 nominations | Teejay 4 of 8 votes to evict | Graciemae Lewis's choice to evict | Dion 2 of 6 votes to evict | Josh 3 of 5 votes to evict | Taylah Louis's choice to evict | Mineé Fewest votes to win |
| Vote Outcome | Zach 5 of 13 votes | Mineé 3 nominations | Zach 1 of 11 votes | Josh 2 of 12 votes | Louis Mineé Teejay 1 nomination each | Bella 0 of 11 votes | Jake 4 of 12 votes | N/A 1 nomination each | Oli 5 of 11 votes | Teejay 1 of 8 votes | Taylah 0 of 7 votes to fake evict | N/A 1 nomination each | Dion 3 of 8 votes | Mineé Louis's choice to stay | Josh 1 of 6 votes | Taylah 2 of 5 votes | Mineé Louis's choice to stay | Tay & Ari Most votes to win |
| Vote Outcome | Zach 5 of 13 votes | Louis 2 nominations | Zach 1 of 11 votes | Josh 2 of 12 votes | Louis Mineé Teejay 1 nomination each | Bella 0 of 11 votes | Jake 4 of 12 votes | N/A 1 nomination each | Oli 5 of 11 votes | Teejay 1 of 8 votes | Taylah 0 of 7 votes to fake evict | N/A 1 nomination each | Dion 3 of 8 votes | Mineé Louis's choice to stay | Josh 1 of 6 votes | Taylah 2 of 5 votes | Mineé Louis's choice to stay | Tay & Ari Most votes to win |
| Vote Outcome | Jake 1 of 13 votes | Jake Lewis Luke Taylah 1 nomination each | Zach 1 of 11 votes | Louis 2 of 12 votes | Louis Mineé Teejay 1 nomination each | Bella 0 of 11 votes | Taylah 1 of 12 votes | N/A 1 nomination each | Teejay 0 of 11 votes | Teejay 1 of 8 votes | Taylah 0 of 7 votes to fake evict | N/A 1 nomination each | Taylah 1 of 8 votes | Mineé Louis's choice to stay | Josh 1 of 6 votes | Tay & Ari 0 of 5 votes | Tay & Ari Louis's choice to stay | Tay & Ari Most votes to win |

### Notes

* ↑ On Day 2, Annelise, Lewis, Louis, and Luke were still left in the BB Express by housemates in the main house. Only these four forgotten housemates were eligible to compete in the first Nominations Challenge.
* ↑ On Day 4, housemates participated in House Nominations, with all housemates voting for two Housemates to be nominated for the next Eviction. The three Housemates with the most votes are nominated for eviction.
* ↑ On Day 5, Big Brother offered the three nominated housemates a chance to save themselves by taking the offer. Annelise choose the offer and saved herself from Eviction. In return, Big Brother took away all the clothes of rest of the housemates.
* 1 2 This was a Pairs Challenge. The winning pair had to agree on nominations.
* ↑ As new housemates Bella and Teejay were immune and couldn't be nominated.
* ↑ On Day 8, housemates participated in House Nominations, with all housemates voting for two Housemates to be nominated for the next Eviction. The four Housemates with the most votes are nominated for eviction.
* ↑ On Day 8, Dion could choose to save one of the nominees. He saved Taylah.
* 1 2 This round was a double eviction and two housemates with the most votes were evicted.
* ↑ On Day 14, housemates participated in House Nominations, with all housemates voting for two Housemates to be nominated for the next Eviction. The four Housemates with the most votes are nominated for eviction.
* ↑ On Day 15, Maddi-Rose decided to leave the house.
* 1 2 On Day 15, a sudden snap eviction took place, resulting in Jake to be evicted. Oli and Teejay faced another eviction on Day 16.
* ↑ On Day 17, the male housemates had to choose a random ball from the box, Teejay got the black ball and had to sit out from the Nominations Challenge and Big Brother gave him immunity.
* ↑ On Day 17, Graciemae and Mineé were Fake Evicted and sent to the Half House.
* ↑ On Day 18, as Graciemae and Mineé were in the Half House, they were not eligible to nominate.
* ↑ On Day 19, as Graciemae and Mineé were in the Half House, they each got a half vote. They mutually had to vote for one housemate.
* ↑ On Day 19, Graciemae chose Lewis and Mineé chose Louis, who had to decide if they would take 5000 dollars cash or their partner from the Half House.
* ↑ The winner of the Final Challenge won a place in the Final 3 and the sole vote at the Final Eviction. The other housemates were nominated for the Final Eviction.
* ↑ For the finale, Australia voted for the winner of "Big Brother Australia 15" and the $100,000 grand prize.

## Reception
### Viewership

This season returned with 274,000 metro viewers, which is half the viewers of last season premiere of 487,000. The second episode fared no better with only 213,000 viewers and losing another thousand viewers in episode three at 212,000. By the fourth episode, the season had dropped almost half of its premiere viewers with only 183,000. Due to low viewership, subsequent episodes were moved from 7:30 to the 8:30 timeslot from 13 November, with a double episode on the 15th. The season finale drew 152,000 viewers, down from season 14's 363,000 viewers.

### Criticism

This season of Big Brother has been negatively received by viewers saying it resembles more a dating show than a social experiment. In particular, the season was unfavourablebly compared to Love Island, Married at First Sight, and the concurrently airing reboot of the British version. Criticism was also pointed to the lack of diversity – including the few People of Colour and the lack of LGBT participants.

### Accolades

| Year | Award | Category | Nominee(s) | Result | Ref. |
| 2024 | TV Tonight Awards: Worst of 2023 | Worst Aussie Show | Big Brother | Won | |
| 2024 | TV Tonight Awards: Worst of 2023 | Most Overexposed | Sonia Kruger | Won | |