Silk Cut is a cigarette brand containing low Tar. It is produced by the Gallaher Group. The packaging is characterized by a distinctive stark white packet with the brand name in either a purple, red, blue, white, silver or green square. Tobacco makes up 75% of the cigarettes' filling. The rest is Cytrel, a cellulose-based tobacco substitute. It is a misconception that the tobacco in Silk Cuts contains less nicotine than other cigarette tobacco. The lower nicotine levels are caused by the design of the filter, which has many more holes than regular strength cigarette filters, to mix the smoke with air.

Silk Cut soared in popularity worldwide in the 70's and 80's as the dangers of cigarette smoking became well known/apparent and consumers switched to a lower tar brand. At 5 mg tar, Silk Cut contained less than half the tar content of stronger brands such as Marlboro, Camel and Benson & Hedges.

The brand was made popular by an advertising campaign designed by Saatchi & Saatchi from 1984. The adverts showed scissors cutting through silk, in a response to / portraying the constraints on tobacco advertising. The adverts were a success and sales of Silk Cut went through the roof. Silk Cut were also the title sponsors of rugby League's Challenge Cup ('Silk Cut Challenge Cup') and sponsored the successful Jaguar XJR Sports Cars in prestigious competitions such as the Le Mans race.

Tobacco and Tobacco related advertisements became illegal in the 90's in many countries. Prior to that Silk Cut was the best selling brand in the U.K., however sales declined behind cheaper budget brands as tax on tobacco increased. In an attempt to counteract this, the manufacturers responded in the new millennium by introducing a fresh new filter and packaging design. Their marketing strategy involved introducing their first 'slim' cigarette in the UK, even though this wasn't the first 'slim' cigarette available in the UK (More, Karelia and Vogue slim cigarettes were at the time available in most tobacco shops).

Silk Cut is also available in a lower tar version and an ultra low tar version with a tar content of only 0.1 mg. When terms such as 'light' and 'low tar' were made illegal to use in the UK for use of tobacco promotion (for fear that it mislead smokers into thinking such products were safer or less harmful), some commentators predicted that Silk Cut's name and good brand-reputation as a low-tar product would favorably affect sales of the brand to health conscious consumers. They were wrong!

Silk Cut Blue cigarettes contain 0.3mg Nicotine and Tar content is 3 mg. Silk Cut Silver cigarettes contain 0.1mg Nicotine and Tar content is 1 mg. Silk Cut White cigarettes contain 0.01mg Nicotine and Tar content is 0.5 mg. Silk Cut cigarettes are also available in a '100s' range (super king size) and in a menthol variety.