There are provided a metal soap which is useful as a food additive to be added to various foods for the purposes of improving a fluidity, an anti-bridging property, a low moisture absorption property and feel upon eating of foods, and has a less adverse influence on the foods, as well as a process for producing the metal soap. The metal soap for a food additive is constituted of a fatty acid calcium salt or a fatty acid magnesium salt having 6 to 24 carbon atoms which is obtained by a double decomposition method, and a water dispersion containing the metal soap in an amount of 2% by mass exhibits a pH of not less than 6 but less than 7. The process for producing the metal soap for a food additive includes the steps of reacting 1 mol of a fatty acid having 6 to 24 carbon atoms with not less than 0.9 mol but less than 1 mol of a monovalent basic compound to obtain a fatty acid basic compound salt； and reacting the fatty acid basic compound salt with a calcium salt or a magnesium salt in an aqueous medium.
