1. Yeji
- Stage Name: Yeji
- Full Name: Hwang Ye Ji
- Korean Name: 황예지
- Birth Place: Korea
- Birthday: May 26, 2000
- Height: 167 cm (5' 6")
- Weight: 46 kg (101 lbs)
- Blood Type: A
Yeji is the official leader of ITZY. She is also the oldest member of the group. In 2018, prior to to her debut with Itzy, she participated in SBS’ show The Fan but was eliminated in episode 5. Her motto is "believe in yourself". Her English name is Lucy Hwang.
2. Lia
- Stage Name: Lia
- Full Name: Choi Jisu
- Korean Name: 최지수
- Country of Birth: South Korea
- Birthday: Jul 21, 2000
- Height: 163 cm (5'4'')
- Weight: 47 kg (104 lbs)
- Blood Type: AB
Lia is the main vocalist of ITZY. Lia is fluent in English as she lived in Canada for several years and studied in an international school. At the age of 14, while she was in middle school in Canada, she passed an audition with SM Entertainment to become a trainee; however, she ended up leaving the agency as her parents wanted her to focus on her studies.
3. Ryujin
- Stage Name: Ryujin
- Full Name: Shin Ryu Jin
- Korean Name: 신류진
- Country of Birth: South Korea
- Birthday: Apr 17, 2001
- Height: 165 cm (5'5'')
- Weight: 47 kg (104 lbs)
- Blood Type: B
Ryujin is the main rapper of ITZY. She is a former contestant of the survival show MixNine. She caught YG’s attention during the show and received an offer from him to join his company but she rejected it and stayed loyal to JYPE. Ryujin trained for 4 years before making her official debut with ITZY
4. Chaeryeong
- Stage Name: Chaeryeong
- Full Name: Lee Chae Ryeong
- Korean Name: 이채령
- Country of Birth: South Korea
- Birthday: Jun 5, 2001
- Height: 168 cm (5'6'')
- Weight: 46 kg (101 lbs)
- Blood Type: B
Chaeryeong is the official main dancer of ITZY. She is former contestant of the survival shows Kpop Star and Sixteen. In 2012, Chaeryeong and her older sister, Chaeyeon, auditioned for Fantagio Entertainment but failed to pass. Chaeryong and her sister, Chaeyeon, also participated in the show Kpop Star Season 3 in the following year. Chaeryeong caught JYP’s attention, who was one of the judges on the show, and was recruited to be a JYPE trainee.
5. Yuna
- Stage Name: Yuna
- Full Name: Shin Yu Na
- Korean Name: 신유나
- Country of Birth: South Korea
- Birthday: Dec 9, 2003
- Height: 172 cm (5'8'')
- Weight: 48 kg (106 lbs)
- Blood Type: A
Yuna is the youngest member (maknae) of ITZY. In 2015, during a KBS Song Festival, she was offered to join JYPE by a casting staff. She was attending her first concert ever with her sister who wanted to see BTOB at the festival. While waiting on the road, a JYPE casting staff approached her and gave her a business card which lead to her JYPE audition. She played Floorball for 4 years between the ages of 11 to 15 (5th grade to 8th grade) and her uniform number was 7.
