Yoshiro Nakamatsu, also known as Dr. NakaMats, is a Japanese inventor who has become a minor celebrity for his inventions. He regularly appears on Japanese talk shows which, in conjunction with his appearance, usually craft a humorous segment based on one or more of his inventions.
He is a prolific inventor, and he even claims to hold the world record for number of inventions with over 4,000 patents. While this claim has been mentioned in several media articles, several other sources do not list Nakamatsu among the world's most prolific inventors. Nakamatsu was the subject of the 2009 documentary The Invention of Dr Nakamats.