Dear Hongrang (Korean: 탄금) is a South Korean mystery melodrama sageuk television series written by Kim Jin-ah, directed by Kim Hong-sun [ko], and starring Lee Jae-wook and Jo Bo-ah. Based on Tangeum: Swallowing Gold by Jang Da-hye, the series follows how Jae-yi searches and uncovers the truth behind Hong-rang's disappearance and the man claiming to be him. It premiered on Netflix on May 16, 2025.

Hong-rang, the son of a wealthy merchant family in Joseon, went missing at the age of eight. His half-sister, Jae-yi, never gives up hope and searches for him tirelessly. Twelve years later, a young man appears claiming to be Hong-rang, but he has no memories of his past. While Jae-yi is skeptical, his mother desperately wants to believe him. However, this man carries a secret, and his reappearance brings intrigue and danger. Jae-yi's quest to uncover the truth behind Hong-rang's disappearance and the identity of this returning man leads her into a web of family secrets and power struggles.

Initially, the series was reported to premiered on Netflix in early 2024. In February 2025, Netflix announced their 2025 Korean films and series lineup and the window date of Dear Hongrang will be in the second quarter of 2025. In April 2025, the series was confirmed to be released on May 16.