Copper(I) acetate (cuprous acetate) is an organic copper salt of acetic acid with chemical formula CH3COOCu.

Under standard conditions, copper(I) acetate is a colorless, odorless crystal.

When interacting with water (hydrolysis), copper(I) hydroxide (CuOH) is formed: In air, it oxidizes to copper(II) acetate.

It forms adducts with organic substances.

Copper(I) acetate is used as a catalyst for the oxidation of phenols.