Subject pronouns (also called personal pronouns) indicate the person speaking (first person), the person or thing spoken to (second person), or the person, place, or thing spoken of (third person), respectively.
Pronouns of the first person are I, me, my, mine, we, us, our, ours. Pronouns of the second person are you, yours. Pronouns of the third person are he, him, his, she, her, hers, it, its, they, them, their, theirs.