Updated: December 12, 2023
Here are the most watched Korean dramas per TV network in South Korea in 2023: TV ratings are based on nationwide viewership data from Nielsen Korea.
KBS2
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 28.0% | Three Bold Siblings (2022-23) | Cast: Lee Hana, Lim Ju-hwan, Wang Bit-na, Kim So-eun, Lee Tae-sung Writer: Kim In-yeong Director: Park Man-yeong |
| 23.9% | The Real Has Come! (2023) | Cast: Ahn Jaehyun, Baek Jin-hee Writer: Jo Jeong-joo Director: Han Joon-seo |
| 18.4% | Live Your Own Life (2023) | Cast: UEE, Ha Jun Screenwriter: Jo Jeong-seon Director: Kim Hyeong-il |
| 15.7% | Vengeance Of The Bride (2022-23) | Cast: Park Hana, Kang Ji-seub, Park Yoon-Jae, Oh Seung-ah Writer: Song Jeong-rim Director: Park Ki-hyun |
| 13.0% | Woman In A Veil (2023) | Cast: Shin Go-eun, Choi Yoon-young, Lee Chae-young Writer: Lee Jeong-dae Director: Shin Chang-seok |
| 10.7% | The Elegant Empire (2023) | Cast: Kim Jin Woo, Han Ji Wan, Kang Yul, Son Sung Yoon, Lee Sang Bo, etc. Writer: Han Young-Mi Director: Park Ki-Ho |
| 10.0% | Goryeo-Khitan War (2023) | Cast: Kim Dong-Joon, Choi Soo-jong, Baek Sung-hyun, Lee Min-young, Lee Won-jong, Kong Jung-hwan, Han Seung-hyun, Kim San-ho, Yoon Bok-in, Han Jae-young Writer: Lee Jung Woo Directors: Jeon Woo Sung, Kim Han Sol |
| 9.7% | Oasis (2023) | Cast: Jang Dong-yoon, Seol In-ah, Choo Young-woo Writer: Jung Hyung-soo Director: Han Hee |
KBS1
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 19.6% | The Love In Your Eyes (2022-23) | Cast: Baek Sung-Hyun, Bae Noo-ri, Choi Yoon-ra, Jung Su-hwan Writer: Na Seung-hyun Director: Ko Young-tak |
| 15.2% | Apple Of My Eye (2023) | Cast: 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 |
| 13.0% | Unpredictable Family (2023) | Cast: Nam Sang-ji, Lee Do-hyeon, Kang Debin, Lee Hyona, Lee Jong-won Screenwriter: Moon Yeong-hoon Director: Kim Seong-geun |
SBS
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 21.0% | Taxi Driver 2 (2023) | Cast: Lee Je-hoon, Kim Eui-sung, Pyo Ye-jin, Jang Hyuk-jin, Bae Yoo-ram Writer: Oh Sang-ho Director: Lee-dan |
| 16.8% | Dr. Romantic 3 (2023) | Cast: Han Suk-kyu, Ahn Hyo-seop, Lee Sung-kyung Writers: Kang Eun Kyung, Lim Hye Min Director: Kang Bo-seung |
| 11.4% | Payback (2023) | Cast: Lee Sun-kyun, Moon Chae-won, Kang Yoo-seok, Park Hoon Written by: Kim Won-seok Directed by: Lee Won-tae |
| 11.2% | Revenant (2023) | Cast: Kim Tae-ri, Oh Jung-se, Hong Kyung Writer: Kim Eun-hee Director: Lee Jung-rim |
| 9.3% | The First Responders 2 (2023) | Cast: Kim Rae-won, Son Ho-jun, Gong Seung-yeon Writer: Min Ji-eun Director: Shin Kyung-soo |
| 7.7% | The Escape of The Seven (2023) | Cast: Uhm Ki-joon, Hwang Jung-eum, Lee Joon, Lee Yoo-bi, Shin Eun-kyung, Yoon Jong-hoon, Jo Yoon-hee, Jo Jae-yoon, Lee Deok-hwa Screenwriter: Kim Soon-ok Director: Joo Dong-min |
MBC
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 12.9% | My Dearest (2023) | Cast: Namgoong Min, Ahn Eun-jin, Lee Hak-joo, Lee Da-in Writer: Hwang Jin Young Director: Kim Sung Yong |
| 9.6% | The Story Of Park’s Marriage Contract (2023) | Cast: Lee Se-young, Bae In-hyuk Writer: Go Nam-jeong Director: Park Sang-hoon |
| 7.3% | Game Of Witches (2022-23) | Cast: Jang Seo-hee, Oh Chang-seok, Kim Kyu-seon, Han Ji-wan, Lee Jung-gil, Yoon Mi-ra Writer: Lee Do-hyeon Director: Lee Hyeong-seon |
JTBC
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 18.5% | Doctor Cha (2023) | Cast: Uhm Jung-hwa, Kim Byung-chul Writer: Jung Yeo-Rang Director: Kim Dae-Jin |
| 16.0% | Agency (2023) | Cast: Lee Bo-young, Jo Sung-ha, Son Na-eun, Han Joon-woo, Jeon Hye-jin Writer: Song Soo-han Director: Lee Chang-min |
| 13.8% | King The Land (2023) | Cast: Lee Junho, Lim Yoona Writer: Choi Rom Director: Im Hyun-wook |
| 12.0% | The Good Bad Mother (2023) | Cast: Ra Mi-ran, Lee Do-hyun, Ahn Eun-jin Writer: Bae Se Young Director: Shim Na Yeon |
| 10.4% | Strong Girl Nam Soon (2023) | Cast: Lee Yoo-mi, Kim Jung-eun, Kim Hae-sook, Ong Seong-wu, Byeon Woo-seok Writer: Baek Mi-kyung Director: Kim Jeong-sik |
| 9.6% | Behind Your Touch (2023) | Cast: Han Ji-min, Lee Min-ki, Suho Writers: Lee Nam-gyoo, Oh Bo-hyeon, Kim Da-hee Directors: Kim Seok-yoon, Choi Bo-yoon |
| 9.4% | Divorce Attorney Shin (2023) | Cast: Cho Seung-woo, Han Hye-jin, Kim Sung-kyung, Jung Moon-sung Writer: Yoo Young-ah Director: Lee Jae Hoon |
| 6.5% | Welcome To Samdal-ri (2023) | Cast: Ji Chang-wook, Shin Hae-sun Writer: Kwon Hye Joo Director: Cha Young Hoon |
tvN
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 17.0% | Crash Course In Romance (2023) | Cast: Jeon Do-yeon, Jung Kyung-ho Writer: Yang Hee-seung Director: Yoo Je-won |
| 9.6% | Alchemy Of Souls Part 2 (2022-23) | Cast: Lee Jae-wook, Go Yoon-jung, Hwang Min-hyun, Arin, Yoo In-soo Writers: Hong Jung-eun and Hong Mi-ran Director: Kim Seong-yoon |
| 9.0% | Castaway Diva (2023) | Cast: Park Eun-bin, Chae Jong-hyeop, Kim Hyo-jin, Cha Hak-yeon, Kim Ju-hoon Screenwriter: Park Hye Ryun Director: Oh Choong Hwan |
| 8.0% | Tale Of The Nine-Tailed 1938 (2023) | Cast: Lee Dong-wook, Kim Bum, Kim So-yeon, Ryu Kyung-soo Writer: Han Woo-ri Director: Kang Shin-hyo |
TV Chosun
| Highest Nationwide Viewership Rating | Drama Title | Creators |
| 11.5% | Red Balloon (2022-23) | Cast: Seo Ji-hye, Lee Sung-jae, Hong Soo-hyun, Lee Sang-woo, Lee Bo-hee Writer: Moon Yeong-nam Director: Jin Hyeong-wook |
| 8.1% | Durian’s Affair (2023) | Cast: Park Joo-mi, Choi Myung-gil, Kim Min-jun, Han Da-gam, Jeon No-min, Yoon Hae-young, Ji Young-san Writer: Im Sung-han Directors: Shin Woo-cheol, Jung Yeo-jin |
Source: Nielsen Korea
KORB 