This page provides lists of best-selling books and book series to date and in any language. "Best-selling" refers to the estimated number of copies sold of each book, rather than the number of books printed or currently owned.

The Abu Dhabi National Oil Company (Arabic: شركة بترول أبو ظبي الوطنية), known by its acronym ADNOC, is the state-owned oil company of Abu Dhabi, United Arab Emirates. It is the world's 12th largest oil company by production.

Southern Sun (officially Southern Sun Limited) is a South African multinational hospitality company headquartered in Sandton, South Africa, and listed on the Johannesburg Stock Exchange (JSE). The company is partially owned by Cape Town-based investment holding company Hosken Consolidated Investments.

Chanel ( shə-NEL, French: [ʃanɛl] ) is an Anglo-French luxury fashion house founded in 1910 by Coco Chanel in Paris. It is privately owned by French brothers, Alain and Gérard Wertheimer, through the holding company Chanel Limited, established in 2018 and headquartered in London.

Doreen Southwood (born 1974) is a South African artist, designer, and boutique owner based in Cape Town. She works in a wide variety of media in her artwork, producing sculptures, objects, prints, film, and more, which she often bases on personal experiences and self exploration.

Fonterra Co-operative Group Limited is a New Zealand multinational publicly traded dairy co-operative owned by New Zealand farmers. The company is responsible for approximately 30% of the world's dairy exports and has revenue exceeding NZ $22 billion, making it New Zealand's largest company.

Great British Energy (GB Energy, GBE) is a publicly owned energy investment company in the United Kingdom. It was established by the Great British Energy Act 2025, which received royal assent on 15 May 2025, and is sponsored by the Department for Energy Security and Net Zero.

Hydro-Québec (French pronunciation: [idʁo kebɛk]) is a Canadian Crown corporation public utility owned by the Provincial government of Quebec headquartered in Montreal, Quebec. It manages the generation, transmission and distribution of electricity in Quebec, as well as the export of power to portions of the Northeast…

NV Energy is a investor-owned public utility which generates, transmits and distributes electric service in northern and southern Nevada, including the Las Vegas Valley, and provides natural gas service in the Reno – Sparks metropolitan area of northern Nevada. Based in Las Vegas, Nevada, it serves about 1.

Ecotricity is a British energy company based in Stroud, Gloucestershire, specialising in selling green energy to consumers that it primarily generates from its 87.2-megawatt wind power portfolio. It is built on the principle of heavily reinvesting its profit in building more of its own green energy generation.