A bisphosphite compound represented by the following formula : wherein in formula , each of R 1 and R 11 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, and a cycloalkyl group having from 3 to 20 carbon atoms; each of R 2 and R 12 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, an alkoxy group having from 1 to 20 carbon atoms, a cycloalkyl group having from 3 to 20 carbon atoms, a cycloalkoxy group having from 3 to 20 carbon atoms, a dialkylamino group having from 2 to 20 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an aryloxy group having from 6 to 20 carbon atoms, an alkylaryl group having from 7 to 20 carbon atoms, an alkylaryloxy group having from 7 to 20 carbon atoms, an arylalkyl group having from 7 to 20 carbon atoms, an arylalkoxy group having from 7 to 20 carbon atoms, a cyano group, a hydroxy group, and a halogen atom; each of R 3 and R 13 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, a cycloalkyl group having from 3 to 20 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkylaryl group having from 7 to 20 carbon atoms, and an arylalkyl group having from 7 to 20 carbon atoms; each of R 4 and R 14 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 12 carbon atoms, a cycloalkyl group having from 3 to 12 carbon atoms, an alkoxy group having from 1 to 12 carbon atoms, a silyl group, a siloxy group, and a halogen atom; and each of Z 1 to Z 4 independently represents an aryl group having from 6 to 20 carbon atoms and may have a substituent, and both of paired Z 1 and Z 2 and paired Z 3 and Z 4 are not combined. wherein in formula , each of R 1 and R 11 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, and a cycloalkyl group having from 3 to 20 carbon atoms; each of R 2 and R 12 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, an alkoxy group having from 1 to 20 carbon atoms, a cycloalkyl group having from 3 to 20 carbon atoms, a cycloalkoxy group having from 3 to 20 carbon atoms, a dialkylamino group having from 2 to 20 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an aryloxy group having from 6 to 20 carbon atoms, an alkylaryl group having from 7 to 20 carbon atoms, an alkylaryloxy group having from 7 to 20 carbon atoms, an arylalkyl group having from 7 to 20 carbon atoms, an arylalkoxy group having from 7 to 20 carbon atoms, a cyano group, a hydroxy group, and a halogen atom; each of R 3 and R 13 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, a cycloalkyl group having from 3 to 20 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkylaryl group having from 7 to 20 carbon atoms, and an arylalkyl group having from 7 to 20 carbon atoms; each of R 4 and R 14 independently represents a member selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 12 carbon atoms, a cycloalkyl group having from 3 to 12 carbon atoms, an alkoxy group having from 1 to 12 carbon atoms, a silyl group, a siloxy group, and a halogen atom; and each of Z 1 to Z 4 independently represents an aryl group having from 6 to 20 carbon atoms and may have a substituent, and both of paired Z 1 and Z 2 and paired Z 3 and Z 4 are not combined. <EOS>