A cat lady is a cultural archetype or stock character, most often depicted as a middle-aged or elderly spinster or widow, who has many cats. The term may be pejorative, or it may be affectionately embraced.

Spinster is a term referring to an unmarried woman who is older than what is perceived as the prime age range during which women usually marry. It can also indicate that a woman is considered unlikely to ever marry. The term originally denoted a woman whose occupation was to spin. A synonymous term is old maid. The closest equivalent term for males is "bachelor" or "confirmed bachelor", but this generally does not carry the same connotations in reference to age and perceived desirability in marriage.