A temperature measuring apparatus for measuring a temperature of a battery pack is provided. A first resistor is connected between a first power supply and a first node, and a second resistor is connected between a second node and a second power supply. A temperature-variable resistive element whose resistance is varied depending on a temperature is connected to between the first node and the second node. A processor measures the temperature of the battery pack based on at least one of a first temperature measured based on a voltage of the first node and a second temperature measured based on a voltage of the second node.