A fuel nozzle, a fuel nozzle module having the same, and a combustor having the same, which can solve a problem of combustion instability due to a high-frequency resonance generated by fuel containing hydrogen are provided. The fuel nozzle includes a fuel flow path through which a fuel flows, and a plurality of fuel plenums including a plurality of micro-mixers including a mixing flow path through which a fluid in which the fuel and compressed air are mixed flows and a fuel supply hole for supplying the fuel to the mixing flow path, wherein the plurality of fuel plenums are formed in the fuel flow path to be spaced apart from each other.