Provided is a fungicidal aqueous suspension composition for agriculture and horticulture, comprising: a component (A) in the form of a specific oxime compound, salt thereof or N-oxide thereof, a component (B) in the form of at least one type of compound selected from the group consisting of a polyoxyalkylene alkyl ether, polyoxyalkylene fatty acid ester, polyoxyalkylene sorbitan fatty acid ester and silicone-based surfactant, and a component (C) in the form of at least one type of compound selected from the group consisting of a nonionic surfactant and anionic surfactant other than component (B).