A metallocene-supported catalyst comprising one or more metallocene compounds represented by the following Chemical Formula 1 or Chemical Formula 2; a cocatalyst compound; and a support: wherein, in Chemical Formula 1, R 1 and R 2, and R 5 and R 6, are the same as or different from each other, and are each independently hydrogen or a C1 to C20 alkyl group; R 3 and R 4, and R 7 and R 8, are the same as or different from each other, and are each independently hydrogen or a C1 to C20 alkyl group, or two or more neighboring groups of R 3 and R 4, and R 7 and R 8, are connected to each other to form a substituted or unsubstituted aliphatic or aromatic ring; Q is a Group 4 transition metal; and R 9 and R 10 are a pivalate group, wherein, in Chemical Formula 2, M is a Group 4 transition metal; B is carbon, silicon, or germanium; Q 1 and Q 2 are the same as or different from each other, and are each independently hydrogen, a halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, a C7 to C20 arylalkyl group, a C1 to C20 alkoxy group, a C2 to C20 alkoxyalkyl group, a C3 to C20 heterocycloalkyl group, or a C5 to C20 heteroaryl group; X 1 and X 2 are a pivalate group; and C 1 and C 2 are the same as or different from each other, and are each independently represented by any one of the following Chemical Formula 3a, Chemical Formula 3b, Chemical Formula 3c, and Chemical Formula 3d, provided that one or more of C 1 and C 2 are represented by Chemical Formula 3a: wherein, in Chemical Formulae 3a, 3b, 3c, and 3d, R 1 to R 28 are the same as or different from each other, and are each independently hydrogen, a halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C1 to C20 alkylsilyl group, a C1 to C20 silylalkyl group, a C1 to C20 alkoxysilyl group, a C1 to C20 ether group, a C1 to C20 silylether group, a C1 to C20 alkoxy group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, or a C7 to C20 arylalkyl group, R' 1 to R' 3 are the same as or different from each other, and are each independently, hydrogen, a halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, or a C6 to C20 aryl group, and two or more neighboring groups of R 1 to R 28 are connected to each other to form a substituted or unsubstituted aliphatic or aromatic ring. wherein, in Chemical Formula 1, R 1 and R 2, and R 5 and R 6, are the same as or different from each other, and are each independently hydrogen or a C1 to C20 alkyl group; R 3 and R 4, and R 7 and R 8, are the same as or different from each other, and are each independently hydrogen or a C1 to C20 alkyl group, or two or more neighboring groups of R 3 and R 4, and R 7 and R 8, are connected to each other to form a substituted or unsubstituted aliphatic or aromatic ring; Q is a Group 4 transition metal; and R 9 and R 10 are a pivalate group, wherein, in Chemical Formula 2, M is a Group 4 transition metal; B is carbon, silicon, or germanium; Q 1 and Q 2 are the same as or different from each other, and are each independently hydrogen, a halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, a C7 to C20 arylalkyl group, a C1 to C20 alkoxy group, a C2 to C20 alkoxyalkyl group, a C3 to C20 heterocycloalkyl group, or a C5 to C20 heteroaryl group; X 1 and X 2 are a pivalate group; and C 1 and C 2 are the same as or different from each other, and are each independently represented by any one of the following Chemical Formula 3a, Chemical Formula 3b, Chemical Formula 3c, and Chemical Formula 3d, provided that one or more of C 1 and C 2 are represented by Chemical Formula 3a: wherein, in Chemical Formulae 3a, 3b, 3c, and 3d, R 1 to R 28 are the same as or different from each other, and are each independently hydrogen, a halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C1 to C20 alkylsilyl group, a C1 to C20 silylalkyl group, a C1 to C20 alkoxysilyl group, a C1 to C20 ether group, a C1 to C20 silylether group, a C1 to C20 alkoxy group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, or a C7 to C20 arylalkyl group, R' 1 to R' 3 are the same as or different from each other, and are each independently, hydrogen, a halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, or a C6 to C20 aryl group, and two or more neighboring groups of R 1 to R 28 are connected to each other to form a substituted or unsubstituted aliphatic or aromatic ring.