Updated: May 1, 2023
Here are the most watched TV series in South Korea in April 2023: TV ratings are based on nationwide viewership data from Nielsen Korea.
| Nationwide Rating | Title | Network | Cast / Creators |
| 23.1% | The Real Has Come! (2023) | KBS2 | Starring: Ahn Jae-hyun, Baek Jin-hee Writer: Jo Jeong-joo Director: Han Joon-seo |
| 21.0% | Taxi Driver 2 (2023) | SBS | Starring: Lee Je-hoon, Kim Eui-sung, Pyo Ye-jin, Jang Hyuk-jin, Bae Yoo-ram Writer: Oh Sang-ho Director: Lee-dan |
| 14.7% | Apple Of My Eye (2023) | KBS1 | Starring: Seo Jun-young, Yoon Da-young, Song Chae-hwan, Choi Jae-won, Choi Phillip Writer: Baek Eun-jung, Chae Hye-yeong, Yoo Sang-young Director: Choi Ji-yeong |
| 13.8% | Dr. Romantic 3 (2023) | SBS | Starring: Han Suk-kyu, Ahn Hyo-seop, Lee Sung-kyung Writers: Kang Eun Kyung, Lim Hye Min Director: Kang Bo-seung |
| 13.2% | Doctor Cha (2023) | JTBC | Starring: Uhm Jung-hwa, Kim Byung-chul Writer: Jung Yeo-Rang Director: Kim Dae-Jin |
| 12.1% | Woman In A Veil (2023) | KBS2 | Starring: Shin Go-eun, Choi Yoon-young, Lee Chae-young Writer: Lee Jeong-dae Director: Shin Chang-seok |
| 9.7% | Oasis (2023) | KBS2 | Starring: Jang Dong-yoon, Seol In-ah, Choo Young-woo Writer: Jung Hyung-soo Director: Han Hee |
| 9.4% | Divorce Attorney Shin (2023) JTBC | JTBC | Starring: Cho Seung-woo, Han Hye-jin, Kim Sung-kyung, Jung Moon-sung Writer: Yoo Young-ah Director: Lee Jae Hoon |
Source: Nielsen Korea
KORB 