Data Subject is someone who can be identified from personal data. The data could be their name, address, telephone number or something else – but if it’s about a person, then they’re the data subject. They’re the ‘subject’ of the data. However, the term only relates to people who are alive. Data protection law doesn’t apply after someone has died. Often when you hear the term ‘data subjects’, this will mean your customers, employees, volunteers and service users. Anyone else whose personal data you use will be a data subject, too.

ICO

Subjek Data Pribadi adalah orang perseorangan yang pada dirinya melekat Data Pribadi.

UU PDP Pasal 1 nomor 6

Dari kedua pengertian diatas dapat ditarik kesimpulan bahwa Subjek Data merupakan orang perseorangan yang dapat dikenali dan dapat Data Pribadi yang melekat pada dirinya.