Is “my” a pronoun?
“My” is a possessive determiner (sometimes called a possessive adjective), which is a word that precedes a noun and indicates possession (e.g., “my book”).
“My” is not typically classified as a pronoun because it does not take the place of a noun. The related word “mine” is used as a possessive pronoun (e.g., “That one’s mine”).
Some sources do categorize “my” and other possessive determiners as “weak possessive pronouns,” but they are more accurately categorized as determiners.