A voice recognition apparatus includes a command recognizer and a data recognizer. The command recognizer recognizes a command portion of a voice input and outputs a command based on a voice recognition result of the voice input. The data recognizer recognizes a data portion of a voice inputs and outputs a data based on a voice recognition result of the voice input. The data recognizer further includes a plurality of data-category recognizers respectively using a data-category dictionary for recognizing the data portion of the voice input and outputting a data result. A voice recognition result selection unit of the voice recognition apparatus selects one of the data results from the data-category recognizers based on the command recognized by the command recognizer.