Sister's Slam Dunk (Korean: 언니들의 슬램덩크; RR: Eonnideurui Seullaemdeongkeu; MR: Ŏnnidŭrŭi sŭllaemdŏngk'ŭ) is a South Korean reality show that aired every Friday on KBS 2TV from April 8 to December 2, 2016. The show's first season featured an all-female cast consisting of Ra Mi-ran, Kim Sook, Hong Jin-kyung, Min Hyo-rin, Jessi and Tiffany, and followed their attempts at fulfilling each cast member's dream using a budget of ₩2,196,000 or approximately $2,000.

The cast members formed a special girl group named "Unnies" (Korean: 언니쓰; RR: Eonnisseu) and released a Park Jin-young-produced single titled "Shut Up", featuring You Hee-yeol, in July 2016.

Season 2 of the program focused primarily on the girl group project, which was Min Hyo-rin's dream in season 1. The show followed seven members, Kang Ye-won, Han Chae-young, Hong Jin-young, Minzy and Jeon Somi, with Kim Sook and Hong Jin-kyung returning, as they formed the second generation of "Unnies", produced by Kim Hyeong-seok (Park Jin-young's mentor). The fulfillment of each member's personal dreams have become the side projects of the program. The fan club name for the group remains as "Dongsaengs" (i.e. younger siblings) and their official greeting, as suggested by Heo Kyung-hwan, is "Shoot! Shoot! Shoot!, Hello! We are Unnies!", with an emphasis on the basketball shooting motion while saying "Shoot". Their official fandom object is a denim-colored balloon.