Provided are a curable composition for imprinting and a cured product, a pattern forming method, and a lithography method in which the curable composition for imprinting is used, the curable composition having excellent resolution ability, filling properties into a mold, and releasability from a mold in a case where a fine pattern having a size of 20 nm or less is prepared. The curable composition for imprinting includes: a monofunctional polymerizable compound; a bifunctional polymerizable compound; and a photopolymerization initiator, in which a content of the monofunctional polymerizable compound is 5 to 30 mass % with respect to a content of all the polymerizable compounds, a content of the bifunctional polymerizable compound is 70 mass % or higher with respect to a content of all the polymerizable compounds, at least one bifunctional polymerizable compound is a bifunctional polymerizable compound in which the number of atoms linking two polymerizable groups to each other is 2 or less, and a content of a bifunctional polymerizable compound that does not include an alicyclic structure and an aromatic ring structure and in which the number of atoms linking two polymerizable groups to each other is 3 or more is 30 mass % or lower with respect to the content of all the polymerizable compounds.