To All the Guys Who Loved Me

Director

• 
  Choi Yoon Seok

Screenwriter

• 
  Lee Eun Young

Main Role

• 
  Hwang Jung Eum

  Seo Hyun Joo

  Main Role
• 
  Yoon Hyun Min

  Hwang Ji Woo

  Main Role
• 
  Seo Ji Hoon

  Park Do Gyum

  Main Role
• 
  Jo Woo Ri

  Han Seo Yoon

  Main Role
• 
  Choi Myung Gil

  Kim Seon Hee

  Main Role

Support Role

• 
  Seo Hyun Chul

  Seo Ho Joon [Hyun Joo's father]

  Support Role
• 
  Hwang Young Hee

  Jung Young Soon [Hyun Joo's mother]

  Support Role
• 
  Kim Gyu Seon

  Song Jin Ah [Hyun Joo's friend]

  Support Role
• 
  Noh Susanna

  Oh Young Eun [Hyun Joo's friend]

  Support Role
• 
  Song Sang Eun

  Kang Min Jung [Hyun Joo's friend]

  Support Role
• 
  Lee Hwang Ui

  Nam Yoo Cheol [Ji Woo's assistant]

  Support Role
• 
  Baek Joo Hee

  Jo Mi Ok [Sunwoo Webtoon Team]

  Support Role
• 
  Hwang Man Ik

  Kim Pal Do [Sunwoo Webtoon Team]

  Support Role
• 
  Yoo Jung Rae

  Hong Bo Hee [Sunwoo Webtoon Team]

  Support Role
• 
  Isle Han

  Kim Da Eun

  Support Role
• 
  Jo Hyun Sik

  Kang Eun Jae

  Support Role
• 
  Song Jin Woo

  Director Kim [Boxing Gym Director/Song Jin Ah's ex-husband]

  Support Role
• 
  Kim Do Yeon

  Oh Ji Hwan [Do Gyum's friend]

  Support Role
• 
  Kang Ji Eun

  [Hwang Ji Woo's mother]

  Support Role
• 
  Lee Chae Yoon

  Seo Hyun Joo [Young]

  Support Role
• 
  Kim Da Ye

  Kim Seon Hee [Young]

  Support Role
• 
  Lee Mal Nyeon

  Artist Lee

  Support Role

Guest Role

• 
  Lee Si Eon

  Oh Si Un [Webtoon writer] (Ep. 1)

  Guest Role
• 
  Ahn Se Bin

  Oh Young Eun (Child) (Ep. 1)

  Guest Role
• 
  Seo Yun Hyuk

  [Seo Hyun Joo's classmate] (Ep. 1)

  Guest Role
• 
  Son Sung Chan

  Bae Jae Jun [Sunwoo Pharmaceutical] (Ep. 1)

  Guest Role
• 
  Kim Dong Ho

  [Man at wedding] (Ep. 1)

  Guest Role
• 
  Lee Si Hoon

  [Seo Hyun Joo's date] (Ep. 1)

  Guest Role
• 
  Kim Sung Yong

  [Sunwoo Pharmaceutical executive] (Ep. 1)

  Guest Role
• 
  Kim Na Eun

  Kang Min Jung [Young] (Ep. 1)

  Guest Role
• 
  Jung Yun Ha

  Song Jin A [Child] (Ep. 1)

  Guest Role
• 
  Shin Yong Jin

  Managing Director Park (Ep. 1)

  Guest Role
• 
  Park Sang Hyun

  [Elementary school teacher] (Ep. 1)

  Guest Role
• 
  Shin Na Ra

  [Yu Na's manager] ( Ep. 1)

  Guest Role
• 
  Kim Dong Ho

  [Man at wedding] (Ep. 1)

  Guest Role
• 
  Han Seung Won

  [Boyfriend #2] (Ep. 1)

  Guest Role
• 
  In Gyo Jin

  In Gyo Seok [CEO of Mytoon Webtoon] (Ep. 1-2)

  Guest Role
• 
  Yoon Sun Woo

  [Seo Hyun Joo's ex-fiance] (Ep. 1, 3)

  Guest Role
• 
  Lee Hyun Kyun

  [Kang Min Jung's husband] (Ep. 1, 11, 13-14)

  Guest Role
• 
  Shin Ji Won

  Yu Na (Ep. 2)

  Guest Role
• 
  Kim Hyun Woo

  [Hyun Joo's classmate] (Ep. 1)

  Guest Role
• 
  ISHA

  [Girl group member] (Ep. 2)

  Guest Role
• 
  E.So

  [Girl group member] (Ep. 2)

  Guest Role
• 
  Se Hyung

  [Girl group member] (Ep. 2)

  Guest Role
• 
  Kim Min Seung

  [Bicycle boy] (Ep. 2)

  Guest Role
• 
  Lee Jong Hyuk

  [Seo Hyun Joo's blind date] (Ep. 3)

  Guest Role
• 
  Park Do Wook

  [Student] (Ep. 3)

  Guest Role
• 
  Bae In Hyuk

  Hwang Ji Woo [Young] (Ep. 4)

  Guest Role
• 
  Choi Gyo Shik

  [Park security guard] (Ep. 4)

  Guest Role
• 
  Song Ha Rim

  [Park security guard] (Ep. 4)

  Guest Role
• 
  Lee Rang Seo

  [Convenience store cashier] (Ep. 7)

  Guest Role
• 
  Lee Seon Hee

  [Italian Table owner] (Ep. 7-8)

  Guest Role
• 
  Jung Ji Hoon

  Hwang Ji Woo [Child] (Ep. 8)

  Guest Role
• 
  Kim Jin Ok

  [Restaurant worker] (Ep. 8)

  Guest Role
• 
  Nam Dong Jin

  [Anniversary party guest] (Ep. 8)

  Guest Role
• 
  Lee Jung Yeol

  Jung Seok Woo [Doctor] (Ep. 8, 14, 16, 18, 20-22)

  Guest Role
• 
  Ha Yi An

  Park Do Gyum [Child] (Ep. 9)

  Guest Role
• 
  Jang Do Ha

  [Academy teacher] (Ep. 11)

  Guest Role
• 
  No Kyung

  [Police officer] (Ep. 11)

  Guest Role
• 
  Kim Jae Hwa

  Butler Kim (Ep. 11-12)

  Guest Role
• 
  Jwa Chae Won

  [Student] (Ep. 11, 14)

  Guest Role
• 
  Park Yoo Mil

  [OB/GYN] (Ep. 11, 14)

  Guest Role
• 
  Kwon Ban Suk

  [Auditor] (Ep. 12)

  Guest Role
• 
  Seo Sung Jong

  Lim Hyun Soo (Ep. 12)

  Guest Role
• 
  Yeo Woon Bok

  [Board member] (Ep. 12-13)

  Guest Role
• 
  Lee Young Jin

  [Board member] (Ep. 12-13)

  Guest Role
• 
  Kim Jong Ho

  [Board member] (Ep. 12-13)

  Guest Role
• 
  Choi Yun Seol

  [Nurse] (Ep. 13)

  Guest Role
• 
  Yum Jung Goo

  Oh Myung Hwang [Security guard] (Ep. 13)

  Guest Role
• 
  Kim Jae Heum

  Hong Joon Oh [Security Guard] (Ep. 13)

  Guest Role
• 
  Lee Seung Hee

  [Apartment resident] (Ep. 13)

  Guest Role
• 
  Kwon Hyuk Soo

  Kim Geun Woo (Ep. 14)

  Guest Role
• 
  Choi Yoon Bin

  [Drunk guy] (Ep. 15)

  Guest Role
• 
  Won Jong Rye

  [Hwang Ji Woo's mother] (Ep. 15)

  Guest Role
• 
  Shin Se Hwi

  [You Gyo girl] (Ep. 15, 20-21)

  Guest Role
• 
  Woo Hyun Joo

  [You Gyo Girl's mother] (Ep. 16, 20-21)

  Guest Role
• 
  Joo Ye Rim

  Seo Hyun Joo [Child]

  Guest Role
• 
  Shim Hye Yun

  Soo Bin [Kang Min Jung's daughter]

  Guest Role
• 
  Yang Ha Yoon

  [Announcer]

  Guest Role
• 
  Song Kyung Hwa

  [Chairwoman Kim Sun Hee's housemaid]

  Guest Role
• 
  Hong Suk Bin

  [Music box maker]

  Guest Role
• 
  Jang Sung Won

  Manager Jung

  Guest Role
• 
  Kim Do Ha

  [Tippan Jewelry worker]

  Guest Role
• 
  Kim Seong In Guest Role

Unknown

• 
  Ha Yi An Unknown