Yamaha Motor Co., Ltd. (ヤマハ発動機株式会社, Yamaha Hatsudōki Kabushiki-gaisha) is a Japanese manufacturer of motorcycles, marine products such as boats and outboard motors, and other motorized products. The company was established in 1955 upon separation from Yamaha Corporation (however, Yamaha Corporation is still the largest private company shareholder with 9.92%, as of 2019),[1] and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012.[2][3]

Led by Genichi Kawakami, the company's founder and first president, Yamaha Motor began production of its first product, the YA-1, in 1955. The 125cc motorcycle won the 3rd Mount Fuji Ascent Race in its class.