Abstract: Renin inhibitors which are spirocyclic piperidine derivatives, of formula (I) and pharmaceutical compositions thereof useful in the treatment of cardiovascular diseases and renal insufficiency, or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable salt of the stereoisomer thereof, wherein: n, for each instance in which it occurs, is independently 0, 1, or 2; W is a five- or six-membered saturated or unsaturated heterocyclic or carbocyclic monocyclic ring, A is (i) a five- or six-membered saturated or unsaturated heterocyclic or carbocyclic monocyclic ring or (ii) a first five- or six-membered saturated or unsaturated heterocyclic or carbocyclic ring which is fused to a second five- or six-membered saturated or unsaturated heterocyclic or carbocyclic ring, V is —(C?O)—, —CH2— or ?CH—; U is a bond or —CH2-, or, when V iS ?CH—, U is —CH?; X is ?CH—, ?CF—, ?C(OR3)—, or —(C?O)—; and Y is ?CH—, ?CF—, ?N—, or, for the case when X is —(C?O)—, Y is —N(R3)—.