Miss Mermaid (Korean: 인어아가씨; RR: Ineo Agassi) is a South Korean television series starring Jang Seo-hee and Kim Sung-taek. It aired on MBC from June 24, 2002 to June 27, 2003 on Mondays to Fridays at 20:20 for 248 episodes.

Miss Mermaid became a nationwide hit upon airing, reaching a peak viewership rating of 43.6%. The cast won several trophies at the 2002 MBC Drama Awards, notably the Daesang ("Grand Prize") for Jang Seo-hee. The series led to Jang's pan-Asian popularity, particularly in China.

But Miss Mermaid was also criticized for Im Sung-han's sensationalistic writing and unrealistic plot twists, as well as the show's multiple extensions.