Kiron Corporation was a subsidiary of Kino Precision Industries, Ltd., a Japanese manufacturer of photographic lenses.

Kiron lenses enjoyed a fine reputation, driven by positive reviews and an award-winning advertising campaign led by Chiat/Day.

After 1985, following the introduction and subsequent explosive popularity of autofocus SLRs, the market for manual focus lenses shrank, and Kiron concluded operations by 1988.

[1] Kiron Corporation was founded to market manually focused film camera optical lenses to the United States.

[9] In addition to lenses, Kiron Corporation also distributed Billingham camera bags and B+W photographic filters in the United States.

By 1988, the company decided to discontinue after-market 35mm camera lens production to concentrate on industrial and other markets.