Lallemand Inc. is a privately held Canadian company, founded at the end of the 19th century, specializing in the development, production, and marketing of yeasts and bacteria.

The company has five major divisions: North American Yeast and Ingredients (based in Memphis, USA), European Yeast and Ingredients (based in Vienna, Austria), Specialty Yeast and Bacteria (based in Toulouse, France), Bio-Ingredients (based in Montreal, Canada) and the British Isles & African Yeast and Ingredients (based in Johannesburg, RSA). Administrative offices for the parent company are in Montreal, Canada.

North American Yeast and Ingredients Division, with headquarters in Memphis, TN, operates through the subsidiaries Lallemand Distribution in Canada, American Yeast Sales in the U.S., and Lallemand Mexico in Mexico. Its yeast plants in Montreal, Baltimore and Memphis and mix plant in Mexico produce fresh, cream and instant dried bakers yeast along with inactive yeasts, specialty yeasts, dough conditioners and baking powders. These products, along with a broad range of other baking ingredients, are marketed mostly through its own sales and distribution organization.

European Yeast and Ingredients Division, with headquarters in Vienna, Austria, produces specialty yeasts, yeast extracts and derivatives and also produces and markets bakers yeast (fresh, cream and instant dried) under renowned brand names from its production, drying and packaging plants in Estonia, Austria, Germany, Slovakia, Poland, Finland, Denmark, Portugal and its distribution centers in the above mentioned countries as well as in Lithuania, Czech Republic and Spain.

Specialty Yeast and Bacteria Division, with headquarters in Toulouse, France, is a technically-driven business focusing on applications of yeast and bacteria in food, fermented beverages, human and animal nutrition, fuel ethanol and for agricultural (plant care) and pharmaceutical uses. It operates worldwide through a network of subsidiaries, affiliates and joint ventures. It is organized in Business Units, each dedicated to a field of industry: Oenology, Brewing, Animal Nutrition, Human Health and Nutrition (ingredients, supplements and pharmaceutical products), Ethanol Technology (fuel ethanol and spirits), Specialty Baking Ingredients and Plant Care. The Division has sales offices in several countries and bacteria and ingredients plants in Canada, France, United States, United Kingdom and Finland.

Bio-Ingredients Division with headquarters in Montreal, Canada and sales offices in Denmark, Austria, Switzerland and the USA, offers inactive yeasts, yeast extracts and yeast derivatives worldwide to various food and feed companies for their savory attributes and to the fermentation industries as highly bioavailable nutrients. Its Lake States unit operates a Torula yeast plant in Wisconsin USA.

British Isles & African Yeast and Ingredients Division with headquarters in Johannesburg, RSA, was created in 2006 with the acquisition of Rymco, better known as Anchor Yeast, and in 2009 was expanded to include the British Isles following the acquisition of the ex-DSM/ GB yeast production and bakers yeast distribution activities in the UK and Ireland. The division offers bakers yeast as well as specialty yeasts from plants in Felixstowe in the UK, Johannesburg and Durban (SABP) in South Africa and Maputo in Mozambique. SABP in Durban also produces in Durban lysine for the South African market.

Other activities and investments of Lallemand include a participation of 50 % in Macco Organiques Inc., which produces specialty salts of organic acids at its plant in Valleyfield, Canada, and in Bruntal, Czech Republic, and exports them throughout the world.