Lang Law is the informal name given to French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 law number 81-766, from August 10, 1981, relating to book prices. The law establishes a fixed price for books sold in France, limiting price discounts on them. The law is named after Jack Lang

Jack Lang (French politician)

Jack Mathieu Émile Lang is a French politician. A member of the Socialist Party, he served as France's Minister of Culture from 1981 to 1986 and 1988 to 1992, and as Minister of Education from 1992 to 1993 and 2000 to 2002. He was also the Mayor of Blois from 1989 to 2000...

, the French Minister of Culture at the time.

The Lang Law works as follows:

• The publisher decides on a price for its book and prints it on the back
• Booksellers are not allowed to sell a book for a discount of more than 5% below the publisher's price.

The Lang Law was passed under pressure from small booksellers, who feared competition from big stores.

Similar Fixed Book Price Laws exist in other countries, namely Austria

Austria

Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

, Denmark

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

, Greece

Greece

Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

, Hungary

Hungary

Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The...

, Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, The Netherlands, Portugal

Portugal

Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

, and Spain

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

.

In other cases, the book price is kept fixed by an agreement

Fixed Book Price Agreement

The Fixed Book Price Agreement is a form of resale price maintenance applied to books. It commonly takes the form of an agreement between publishers and booksellers which set the prices at which books were to be sold to the public...

 between the publishers and the booksellers. This was the case of the Net Book Agreement

Net Book Agreement

The Net Book Agreement was a British fixed Book Price Agreement between publishers and booksellers which set the prices at which books were to be sold to the public....

 in the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

.

The Lang Law was extended to cover e-books on May 2011.