Quorn is a meat substitute product originating in the UK and sold primarily in Europe, but is available in 14 countries. Quorn is sold as both a cooking ingredient and as the meat substitute used in a range of prepackaged meals.

Quorn (it derives its name from the Leicestershire village of Quorn)was first marketed in 1985 by Marlow Foods (named after Rank Hovis McDougall's headquarters in Marlow, Buckinghamshire), a joint venture between RHM and Imperial Chemical Industries (ICI. The two partners invested in patents for growing and processing the fungus, and other intellectual properties in the brand.

Quorn entered distribution in the UK in 1993, and was introduced to other parts of Europe in the 1990s, and to North America in 2002.

All Quorn foods contain mycoprotein as an ingredient, which is derived from the Fusarium venenatum fungus. In most Quorn products, the fungus culture is dried and mixed with egg albumen, which acts as a binder, and then is adjusted in texture and pressed into various forms. A vegan formulation also exists that uses potato protein as a binder instead of egg albumen.

Quorn brand mycoprotein is sold in ready-to-cook forms, such as cubes and a form resembling minced meat. The company later introduced a range of chilled vegetarian meals, including pizzas, lasagne, cottage pie, and products resembling sliced meat, hot dogs, and burgers.

By 2005 Quorn enjoyed around 60% of the meat-replacement food market in the UK, with annual sales of around £95 million.

As of 2014, it was reported that most consumers of Quorn are meat eaters rather than vegetarians. The market for Quorn products is increasing worldwide and the company expects further growth.

According to Statista, Quorn ranks leading frozen food brands by average Buzz score in the United Kingdom from January to December 2019, with a score of 6.7.

According to statista and en.wikipedia