A demonstrative pronoun meaning 'that person' or 'he/she', referring to a third person removed from speaker and listener; can be used for either gender and sometimes refers to one's spouse in casual speech.
あの人はいつも優しく話しかけてくれる。
That person always speaks to me kindly.
あの人が来る前に準備を終えよう。
Let's finish preparing before that person arrives.
彼の人（あの人）は今、外出しています。
That person is out right now.
あの人（＝夫）は料理が得意だ。
That person (my husband) is good at cooking.
An archaic/poetic second-person pronoun meaning 'you'; rarely used in modern Japanese.
（文学的な例）あの人、我が屋へ来たりとは思わざりき。
(Literary example) I never thought you would come to my house.