Isa (아이사) is a Korean singer under High Up Entertainment. She is a member of the Korean pop girl group STAYC.
- Stage Name: Isa (아이사)
- Birth Name: Lee Chae Young (이채영)
- Birthdate: January 23, 2002
- Birthplace: Busan, South Korea
- Blood Type: O
- Height: 166cm
- Younghwa Elementary School (Transferred)
- Minan Elementary School (Graduated)
- Donga Middle School (Graduated)
- Shindo High School (Transferred)
- Apgujeong High School (Transferred)
- Gajaeul High School (Graduated)
- Hobbies: Searching for restaurants, shopping, finding new places
- Specialties: Helping to solve problems
- She attended Busan's Hak Enter Vocal & Dance Academy.