Nikon Corporation (Kabushiki-gaisha Nikon^?) (TYO: 7731 ), also known as Nikon or Nikon Corp., is a Japanese company specializing in optics and imaging. Its products include cameras, binoculars, microscopes, measurement instruments, and the steppers used in the photolithography steps of semiconductor fabrication. It was founded in 1917 as Nihon (Nippon); the company was renamed Nikon Corporation, after its cameras, in 1988. Nikon is one of the Mitsubishi companies.

The name Nikon, which dates from 1946, is a merging of Nippon Kōgaku ("Japan Optical") and an imitation of Zeiss Ikon. Nikon is pronounced in two syllables like the English words “knee cone”.

Among its famous products are Nikkor camera lenses (notably those designed for the company's own F-mount SLR cameras), Nikonos underwater cameras, the Nikon F-series of professional 135 film SLR cameras, and the Nikon D-series digital SLRs. Nikon has helped lead the transition to digital photography with both the Coolpix line of consumer and prosumer cameras as well as system cameras like the Nikon D200, D80, D70s and D50, and professional DSLRs including the D2 series (see below).

Nikon's main competitors include Canon, Sony, Pentax, and Olympus.

Nikon Corporation was established in 1917 when two leading optical manufacturers merged to form a comprehensive, fully integrated optical company known as Nippon Kogaku K.K. Over the next 60 years this growing company became a leading manufacturer of optical lenses and precision equipment used in cameras, binoculars, microscopes and inspection equipment. During World War II the company grew to 19 factories and 23,000 employees, supplying items such as binoculars, lenses, bomb sights and periscopes to the Japanese military. After the war it reverted to its civilian product range with a single factory.

Besides cameras, Nikon Corporation (Nikon) is recognized as a world leader in development and manufacturing of advanced optical and precision photolithography equipment. In 1980, the first stepper, the NSR-1010G, was produced in Japan. Since then, Nikon has introduced over 50 models of steppers and scanners for the production of semiconductors and liquid crystal displays. Nikon currently designs and manufactures precision equipment for use in semiconductor and liquid crystal display (LCD) fabrication, inspection, and measurement. Nikon also designs and manufactures visual imaging products including cameras; instruments such as microscopes; and other products such as chemical mechanical polishing (CMP) systems, binoculars, surveying instruments, eyewear, sport optics, and optical measuring and inspection equipment.

In 1982, Nikon Precision Inc. (NPI) was established in the United States. NPI is the North American sales and service arm specifically for Nikon Corporation's semiconductor photolithography equipment and is headquartered in Belmont, California. Fueled by a rapidly growing customer base, the company quickly expanded. In 1990, NPI opened its current headquarters and the facility now includes corporate offices, a fully equipped world-wide training center (WWTC), service operations, applications engineering, technology engineering, quality and reliability engineering, training, technical support, sales, and marketing for Nikon equipment serving the wafer, photomask, flat panel display, and thin-film magnetic head industries. Today, NPI is an industry leader in supplying and supporting advanced photolithography equipment used in the critical stages of semiconductor manufacturing.

Nikon Corporation also has research and development operations in the U.S. under Nikon Research Corporation of America (NRCA), which directly supports R&D efforts of the Precision Equipment Division in Kumagaya, Japan. By leveraging its strong and long-standing customer relationships, global brand recognition, and technological expertise, Nikon has positioned themselves to maintain their market leadership through its emphasis on leading-edge research and development and its ability to adapt its products to meet its customers' rapidly changing needs.

Today, Nikon Group Companies total nearly 17,000 employees worldwide.

In January 2006, Nikon announced it would stop making most of its film camera models and all of its large format lenses, and focus on digital models^[1].