A negative electrode material for a secondary battery includes a negative electrode active material and a carbon nanotube, wherein the negative electrode active material includes graphite and a material including a silicon element, and the carbon nanotube has an average fiber diameter of 0.5 nm to 6 nm and an average fiber length of 1.2 μm to 8 μm. A secondary battery includes a negative electrode including the negative electrode material for a secondary battery, a positive electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte.