A quantum dot composition, comprising: a quantum dot; and a ligand combined with a surface of the quantum dot, wherein the ligand comprises: a body part comprising a charge transport moiety; and a head part combined with the surface of the quantum dot, wherein the body part is represented by Formula 1-1 or Formula 1-2, and when the body part is represented by Formula 1-1, the ligand is represented by Formula 2-1, Formula 2-2, Formula 2-3, Formula 3-2, or Formula 3-3: in Formulae 2-1, 2-2, 2-3, 3-2, and 3-3 R is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms for forming a ring; and in Formula 1-1 and Formula 1-2, R 1 to R 5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C 1 to C 20 alkyl group, a substituted or unsubstituted C 6 to C 60 aryl group, or a substituted or unsubstituted C 2 to C 60 heteroaryl group, and n 1 is an integer of 0 to 8; n 2 to n 5 are each independently an integer of 0 to 5, and the head part comprises at least one thiol group. a quantum dot; and a ligand combined with a surface of the quantum dot, wherein the ligand comprises: a body part comprising a charge transport moiety; and a head part combined with the surface of the quantum dot, wherein the body part is represented by Formula 1-1 or Formula 1-2, and when the body part is represented by Formula 1-1, the ligand is represented by Formula 2-1, Formula 2-2, Formula 2-3, Formula 3-2, or Formula 3-3: in Formulae 2-1, 2-2, 2-3, 3-2, and 3-3 R is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms for forming a ring; and in Formula 1-1 and Formula 1-2, R 1 to R 5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C 1 to C 20 alkyl group, a substituted or unsubstituted C 6 to C 60 aryl group, or a substituted or unsubstituted C 2 to C 60 heteroaryl group, and n 1 is an integer of 0 to 8; n 2 to n 5 are each independently an integer of 0 to 5, a body part comprising a charge transport moiety; and a head part combined with the surface of the quantum dot, wherein the body part is represented by Formula 1-1 or Formula 1-2, and when the body part is represented by Formula 1-1, the ligand is represented by Formula 2-1, Formula 2-2, Formula 2-3, Formula 3-2, or Formula 3-3: in Formulae 2-1, 2-2, 2-3, 3-2, and 3-3 R is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms for forming a ring; and in Formula 1-1 and Formula 1-2, R 1 to R 5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C 1 to C 20 alkyl group, a substituted or unsubstituted C 6 to C 60 aryl group, or a substituted or unsubstituted C 2 to C 60 heteroaryl group, and n 1 is an integer of 0 to 8; n 2 to n 5 are each independently an integer of 0 to 5, in Formulae 2-1, 2-2, 2-3, 3-2, and 3-3 R is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms for forming a ring; and in Formula 1-1 and Formula 1-2, R 1 to R 5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C 1 to C 20 alkyl group, a substituted or unsubstituted C 6 to C 60 aryl group, or a substituted or unsubstituted C 2 to C 60 heteroaryl group, and n 1 is an integer of 0 to 8; n 2 to n 5 are each independently an integer of 0 to 5,