When the Camellia Blooms (Korean: 동백꽃 필 무렵) is a 2019 South Korean television series starring Gong Hyo-jin, Kang Ha-neul, and Kim Ji-seok. It aired on KBS2's Wednesdays and Thursdays at 22:00 (KST) from September 18 to November 21, 2019. Each episode was released on Netflix in South Korea and most Asia-Pacific and English speaking countries after their television broadcast.

When the Camellia Blooms became the highest rated mini-series drama airing in 2019 with a single episode rating of 23.8%. According to Nielsen Korea, the drama also became the second highest rated drama of 2019 with all episodes' average ratings of 14.83% behind SBS's The Fiery Priest.

The series was met with praise by critics and audiences for its production and solid actors' performances. It also received favourable reviews for its realistic plot and unique genre combinations of romantic-comedy and thriller.

The drama received 10 nominations at 56th Baeksang Arts Awards, winning 4 – Grand Prize for Television, Best Screenplay, Best Actor for Kang Ha-neul and Best Supporting Actor for Oh Jung-se and won multiple awards at 2019 KBS Drama Awards including Grand Prize for Gong Hyo-jin.