RUBBER COMPOSITION AND TIRE

A rubber composition according to an embodiment contains a diene rubber, silica, a plant-derived glyceryl oleate, and a mineral oil that is an optional component. The glyceryl oleate includes glyceryl monooleate as a part thereof. The mineral oil (including an extender oil) is contained such that the mass ratio of the mineral oil to the glyceryl oleate is 0 or more and 5.0 or less.