King Maker IV

King Maker IV is a 2021 Hong Kong survival reality show on ViuTV as fourth season of King Maker (ViuTV), accepting only female contestants. It aired from 30 October to 25 December 2021, with Marife Yau (Marf) being the champion, Garie Shum (Gao) being the first runner-up and Rejena Simkhada (Day) being the second runner-up.

Aftermath
Yau, Shum and Simkhada, along with five other contestants Sumling Li, Natalie So (So Ching), Winka Chan, Ivy So and Candy Wong, formed the official girl group Collar after the competition, with their first single Call My Name! released on 13 January 2022. Two additional girl groups, namely Lolly Talk and Strayz, are also formed after the competition.

Two contestants from the competition, Jamie Ho (Ho Pui) and Chloe Wong (Kwan Yi), debuted as soloists after the competition.

Five contestants from the competition, Sica Ho, Yoyo Kot, Alice Hui, Win Win Yeung and Ash Chung, signed to MakerVille, the production company split off from ViuTV, after the competition.