The tip of Kazuhiro Watanabe's spiked mohawk stands 3 ft 8.6 inches proud of his skull and earned him a place in the 2013 edition of the book, which is released on Thursday.
Watanabe unveiled his hair-do at a press event in New York on Wednesday to mark the launch of the new book.
"It was a lot of work ... but I am happy to have achieved the world's No 1," 40-year-old Watanabe told reporters, adding that it had taken him 15 years to grow the mohawk to its present size.
To get it into shape takes three stylists, three cannisters of hair spray and a bottle of hair gel, Watanabe said.
Without gel and hairspray, the hair reaches his knees.
"It is too expensive to do the mohawk every day, so I only do it for occasions like this and parties," he said.
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