VIP Brother 4, also referred to as VIP Brother 2012 was the fourth season of the reality show VIP Brother in Bulgaria and the ninth season of the Big Brother format overall. It commenced on Nova Television on September 16, 2012, and lasted for two months, ending on November 17, 2012. It was immediately followed by an All-Stars edition. It was the first season to air more than two years after the family edition and more than three years after the third celebrity edition. Niki Kanchev returned as the show's main presenter for the Live shows on Monday on Wednesday (evictions and nominations, respectively), with Aleksandra Sarchadjieva being the presenter for the daily episodes.

VIP Brother 4 finished on Day 63, making it the longest celebrity edition of the format in Bulgaria so far. It was also the first and so far, the only season with no voluntary exits by any Housemates. Orlin Pavlov won with Dimitar Kovachev "Funky" as the runner-up.

On March 27, 2012 Endemol announced that a deal with Nova TV had been finalized for another two seasons to be aired.

On June 10, 2012 Nova TV confirmed that VIP Brother 4 would commence in September and that an all-stars edition of Big Brother would be aired after the finale at the end of 2012.

The official logo was the same as the one for Big Brother 13 UK. This logo was also used in the first season of Big Brother All Stars in Bulgaria.

11 Housemates entered the House on Day 1, and another 5 on Day 2, including Pamela Anderson who was a houseguest for two. Ivan (also houseguest) and Ludmilla entered on Day 9, and Kamelia (as Sofia) on Day 11.

Iren and Vladimir were competing as one contestant.

Each Housemate had a necklace worth 10,000 leva. If evicted, the Housemate had to choose another Housemate to have their necklace.