Louis Roederer is a producer of champagne based in Reims, France. Founded in 1776, it was inherited and renamed by Louis Roederer in 1833. It remains today as one of the only still independent and family-run maisons de champagne (Champagne house). Over 3.5 million bottles of Louis Roederer champagne are shipped each year to more than 100 countries.

Initially founded as Dubois Père & Fils in 1776, Louis Roederer inherited the company from his uncle in 1833, renamed it eponymously, and set out to target markets abroad. With concentrated efforts in several countries, including Russia. Tsar Nicholas II nominated Louis Roederer as the official wine supplier to the Imperial Court of Russia, though the Russian Revolution and the U.S. Prohibition caused financial difficulties during the early 20th century, Roederer was re-established as a leading Grandes Marques producer and remains in descendants Rouzaud ownership. Cristal is a precursor prestige cuvée brand and was made commercially available in 1945.

Louis Roederer remains one of the few family-owned independent companies run by real wine specialists. The stock ration in Louis Roederer's cellars represents between four and five years' sales.

From a vineyard area of 240 hectares (590 acres), Louis Roederer produces two thirds of the grapes needed for its production, sourcing the remaining required fruit from established farming contacts.

The vintage cuvées include the Vintage, Rosé Vintage, with Pinot noir and Chardonnay in an approximately 7:3 proportion, and the 100% Chardonnay Blanc de Blancs. The prestige cuvée Cristal, is a blend of around 40% Chardonnay and 60% Pinot noir. This prestige cuvée is also available as a rosé, which contains around 55% Pinot noir and 45% Chardonnay. Both Rosé Vintage and Cristal Rosé wines are made using the saignée method.

The total annual production of Roederer is approximately 3.5 million bottles, of which 70–80% is Louis Roederer Brut Premier.

Brut Premier is a non-vintage Champagne combining at least four vintage wines in a blend of 40% Pinot Noir, 40% Chardonnay and 20% Meunier, the three main grape varieties allowed in the composition of Champagne, coming from more than fifty different crus. The inclusion of reserve wines (approximately 20%) matured in oak casks for several years gives the complexity and roundness characteristic of Louis Roederer's champagnes. It is aged for 3 years in Louis Roederer’s cellars and left for 6 months after dégorgement (disgorging). The dosage (residual sugar) is 9g/l.

The Carte Blanche Cuvée is also produced from three Varieties : 40% Pinot Noir, 40% Chardonnay, 20% Meunier. The main difference between Brut Premier and Carte Blanche is that 5% of Carte Blanche come from wine matured in oak tuns. It is aged for 3 years in Louis Roederer’s cellars and left for 6 months after dégorgement (disgorging).

In Champagne, a vintage Champagne (Champagne Millésimé in French) is a champagne composed entirely of wines of the same year. The specificity of Louis Roederer's vintage wines is that they are exclusively elaborated from Louis Roederer's vineyards.