According to an aspect of the invention, there is provided an organic silicon compound represented by the following Formula (I) or Formula (II):
(R1)x(OR)3-xSi-L1-(A)-L2-Si(OR3)3-y(R4)y Formula (I)
(R5)z(OR6)3-zSi-L3-(B)—R7 Formula (II)
wherein, R1 to R6 each independently represent a hydrogen atom or a hydrocarbon group having 8 or less carbon atoms; R7 represents a hydrogen atom or a monovalent non-metal atom group; x, y and z each independently represent an integer from 0 to 2; L1, L2 and L3 each independently represent a divalent linking group having three or more different atoms selected from the group consisting of a carbon atom, a hydrogen atom, an oxygen atom, a nitrogen atom and a sulfur atom; and A and B each independently represent a polymer or oligomer having a repeating structure formed by a structural unit.