Abstract
The study of product champion in new product development project is ahead in America, Germany, Korea and so on. Additionally their comparison between that nationalities, but there are a rare study in Japan. Product champion is known as important key person who influence strongly for new product success along with project manager, so it is very significant outcomes to discover those existences in Japanese firms. After we reviewed previous research about project manager and product champion, we got together their relationship and conducted an empirical study. In the result, it was found that existences and a clue of product champion study in Japan.