An organic compound which is represented by the following general formula, has a molecular weight of 750 or more and 2,000 or less, and has one or no carbazolyl group in the molecule: wherein A, B, and C each independently are selected from substituents represented by the following general formulae to: -Ar 1 -X 1 -Ar 2 -Ar 3 -X 2 -Ar 4 -Ar 5 -Ar 6 -X 3 -Ar 7 -Ar 8 -Ar 9 -Ar 10 -X 4 -Ar 11 -Ar 12 -Ar 13 -Ar 14 -Ar 15 -X 5 wherein Ar 1 represents a 1,2-phenylene group or 1,3-phenylene group, which may have a substituent R, Ar 2 to Ar 15 each independently represent a 1,2-phenylene group, 1,3-phenylene group, or 1,4-phenylene group, which may have a substituent R, X 1 represents an aromatic hydrocarbon group which has 10 or more carbon atoms and may have a substituent R, or a carbazolyl group which may have a substituent R, and X 2 to X 5 each independently represent an aromatic hydrocarbon group which may have a substituent R, a carbazolyl group which may have a substituent R, a dibenzofuranyl group which may have a substituent R, or a dibenzothienyl group which may have a substituent R, wherein R represents one of groups comprising a phenyl group which may further have a substituent R' dibenzofuranyl group which may further have a substituent R', dibenzothienyl group which may further have a substituent R', alkyl group, silyl group, fluorine atom, and perfluoroalkyl group, wherein R' represents one of the group comprising an alkyl group, a silyl group, a fluorine atom, or a perfluoroalkyl group, with the proviso that A, B, and C each contain at least one of a 1,2-phenylene group and a 1,3-phenylene group, and that A, B, and C do not simultaneously represent the same group; and D represents CH or a nitrogen atom, wherein in general formulae to, the substituents represented by Ar 2 to Ar 15 each independently are a 1,3-phenylcne group or a 1,4-phenylene group. A, B, and C each independently are selected from substituents represented by the following general formulae to: -Ar 1 -X 1 -Ar 2 -Ar 3 -X 2 -Ar 4 -Ar 5 -Ar 6 -X 3 -Ar 7 -Ar 8 -Ar 9 -Ar 10 -X 4 -Ar 11 -Ar 12 -Ar 13 -Ar 14 -Ar 15 -X 5 wherein Ar 1 represents a 1,2-phenylene group or 1,3-phenylene group, which may have a substituent R, Ar 2 to Ar 15 each independently represent a 1,2-phenylene group, 1,3-phenylene group, or 1,4-phenylene group, which may have a substituent R, X 1 represents an aromatic hydrocarbon group which has 10 or more carbon atoms and may have a substituent R, or a carbazolyl group which may have a substituent R, and X 2 to X 5 each independently represent an aromatic hydrocarbon group which may have a substituent R, a carbazolyl group which may have a substituent R, a dibenzofuranyl group which may have a substituent R, or a dibenzothienyl group which may have a substituent R, wherein R represents one of groups comprising a phenyl group which may further have a substituent R' dibenzofuranyl group which may further have a substituent R', dibenzothienyl group which may further have a substituent R', alkyl group, silyl group, fluorine atom, and perfluoroalkyl group, wherein R' represents one of the group comprising an alkyl group, a silyl group, a fluorine atom, or a perfluoroalkyl group, with the proviso that A, B, and C each contain at least one of a 1,2-phenylene group and a 1,3-phenylene group, and that A, B, and C do not simultaneously represent the same group; and wherein Ar 1 represents a 1,2-phenylene group or 1,3-phenylene group, which may have a substituent R, Ar 2 to Ar 15 each independently represent a 1,2-phenylene group, 1,3-phenylene group, or 1,4-phenylene group, which may have a substituent R, X 1 represents an aromatic hydrocarbon group which has 10 or more carbon atoms and may have a substituent R, or a carbazolyl group which may have a substituent R, and X 2 to X 5 each independently represent an aromatic hydrocarbon group which may have a substituent R, a carbazolyl group which may have a substituent R, a dibenzofuranyl group which may have a substituent R, or a dibenzothienyl group which may have a substituent R, wherein R represents one of groups comprising a phenyl group which may further have a substituent R' dibenzofuranyl group which may further have a substituent R', dibenzothienyl group which may further have a substituent R', alkyl group, silyl group, fluorine atom, and perfluoroalkyl group, wherein R' represents one of the group comprising an alkyl group, a silyl group, a fluorine atom, or a perfluoroalkyl group, with the proviso that A, B, and C each contain at least one of a 1,2-phenylene group and a 1,3-phenylene group, and that A, B, and C do not simultaneously represent the same group; and D represents CH or a nitrogen atom, wherein in general formulae to, the substituents represented by Ar 2 to Ar 15 each independently are a 1,3-phenylcne group or a 1,4-phenylene group.