There are provided a release agent capable of attaining a toner excellent in an anti-offset property and an anti-filming property, without detaching from a kneaded mass even in a case of granulating by heating a dispersion medium containing the kneaded mass, as well as a toner using the release agent and a manufacturing method thereof. A release agent containing a compatible site having compatibility with the binder resin and a releasing site chemically bonded with the compatible site and having the releasing ability is used as the release agent when preparing a kneaded mass by melt-kneading at least a binder resin, a colorant, and a release agent, whereby detachment of the release agent from the kneaded mass can be prevented in producing particles of kneaded mass as the toner particles by mixing the kneaded mass to an aqueous medium prepared and heating and stirring them.