A quantum dot composite includes: a quantum dot; and a ligand bonded to a surface of the quantum dot, wherein a plurality of binding portions to which the ligand is bonded are provided on the surface of the quantum dot, wherein the binding portions include: a first binding portion in which cations are exposed; a second binding portion in which anions are exposed; and a third binding portion in which the cations and the anions are bonded to each other and exposed, and the ligand includes: a first ligand bonded to the first binding portion; a second ligand bonded to the second binding portion; and a third ligand bonded to the third binding portion. Accordingly, a light emitting diode including the quantum dot composite of an embodiment as a light emitting material may have increased luminous efficiency.