Polymerization catalyst for olefin polymer

The present invention is a method for producing an olefin polymer, which is characterized by polymerizing an olefin in the presence of a catalyst composition containing a compound represented by general formula (A) or general formula (B) and a transition metal compound represented by general formula (C), or in the presence of a metal complex represented by general formula (D) (wherein the definitions in the general formulae are as described in the specification). Provided are: a catalyst for olefin polymerization capable of copolymerizing an olefin and a vinyl monomer with high activity, molecular weight, and comonomer introduction efficiency; and a method for producing an olefin polymer using the catalyst for olefin polymerization. 本发明是烯烃系聚合物的生产方法，该方法的特征在于在包含由通式(A)或通式(B)表示的化合物和由通式(C)表示的过渡金属化合物的催化剂组合物的存在下、或在由通式(D)表示的金属配合物的存在下(各通式中的定义如说明书中所述)使烯烃聚合。提供：能够以高的活性、分子量和共聚单体引入效率使烯烃和乙烯基单体共聚的烯烃聚合用催化剂、以及使用该烯烃聚合用催化剂生产烯烃系聚合物的方法。