Tamron Co., Ltd. (株式会社タムロン Kabushiki-gaisha Tamuron?) is a Japanese company manufacturing photographic lenses, optical components and commercial/industrial-use optics. Tamron Headquarters is located in Saitama City in the Saitama Prefecture of Japan.

Sony Corporation maintains an 11.38% share hold in Tamron, making it the second-largest shareholder below New Well Co., Ltd. [(주) 뉴웰] with 17.81% (as of July 2015).

  • 1950 November – Taisei Optical Manufacturing Company founded.
  • 1952 October – Taisei Optical Industries established with a capital of 2.5 million yen.
  • 1958 – ‘Tamron’ trademark registered.
  • 1970 April – Trade name changed to Tamron Co., Ltd.
  • 1979 April – Tamron Industries, Inc. (presently Tamron USA, Inc.) established in New York City.
  • 1982 September – Tamron Vertriebs GmbH established in Germany.
  • 1984 February – Optech Tamron Co., Ltd. is established in Namioka, Aomori Prefecture.
  • 1984 August – Shares listed with Japan Securities Dealers Association (currently JASDAQ) in Tokyo for over-the-counter transactions.
  • 1985 December – Tamron Fine Giken Co., Ltd., a plant for making precision metal molds is established.
  • 1986 January – Injection molding plant is established in Owani, Aomori.
  • 1991 June – Optech Tamron Co., Ltd., is absorbed by Tamron Co., Ltd.
  • 1995 February – Tamron acquires 75% capitcal of Bronica Co., Ltd., entering into the medium-format camera business
  • 1995 April – Tamron (UK) Ltd. is established in the U.K.
  • 1997 May – Tamron Industries (Hong Kong) is established in Hong Kong.
  • 1997 July – Tamron Optical (Foshan) Co., Ltd. is established in Foshan, Guangdong, People’s Republic of China.
  • 1998 July – Bronica Co., Ltd. is merged into Tamron Co., Ltd.
  • 2000 June – Tamron Fine Giken is merged into Tamron Co., Ltd.
  • 2000 June – Tamron France EURL is established in France.
  • 2005 October – Tamron Optical (Shanghai) Co., Ltd. is established in Shanghai, People’s Republic of China.
  • 2006 November – Tamron listed on the 1st Section of the Tokyo Stock Exchange.
  • 2009 July – Tamron Co., Ltd. India Liaison Office opened in Haryana, India.
  • 2009 November – Tamron Europe GmbH. Moscow Representative Office opened in Moscow, Russia.
  • 2013 June – Tamron India Pvt Ltd.opened in Haryana, India.