A bookmaker is an organisation or a person that takes bets on sporting and other events at agreed upon odds.

• 888sport (Gibraltar, owned by 888 Holdings)
• Bet365 (United Kingdom, owned by the Coates family)
• Betclic (France / Malta, owned by Stéphane Courbit and SBM)
• Betfair (United Kingdom, owned by Flutter)
• Betfred (United Kingdom / Gibraltar, owned by Fred Done)
• Betsson (Sweden / Malta)
• BetVictor (Gibraltar, owned by Michael Tabor)
• Betway (Malta / Guernsey)
• Boylesports (Ireland)
• Bwin (Austria, owned by Entain)
• Eurofootball (Bulgaria)
• Fonbet (Russia)
• Coral (United Kingdom, owned by Entain)
• Ladbrokes (United Kingdom, owned by Entain)
• LeoVegas (Sweden)
• Liga Stavok (Russia)
• Marathonbet (Russia)
• Paddy Power (Ireland, owned by Flutter)
• SBOBET (Isle of Man / Philippines, owned by Celton Manx)
• Sky Bet (United Kingdom, owned by Flutter)
• Sportingbet (United Kingdom, owned by Entain)
• The Tote (United Kingdom)
• Totolotek (Poland)
• Unibet (Malta, owned by the Kindred Group)
• William Hill (United Kingdom)

• Bet9ja (Nigeria, owned by Ayo Ojuroye and Kunle Soname)
• Betika (Kenya)
• Hollywoodbets (South Africa)
• SportPesa (Kenya)

• BetMGM (United States, co-owned by MGM Resorts International and Entain)
• BetOnline (Panama)
• BetUS (Costa Rica)
• DraftKings (United States)
• FanDuel (United States, owned by Flutter)
• Pinnacle Sports (Curaçao)
• TwinSpires (United States)
• UBET1288^[1]
• Xpressbet (United States)

• Dafabet (Philippines, owned by AsianBGE)
• Sportsbet.com.au (Australia, owned by Flutter)

• BetEasy
• Centrebet
• Stanley Leisure

• John Zancocchio (1954-)
• Victor Chandler (1951–)^[2]
• Barney Eastwood (1932–2020)^[3]
• Philip Giaccone (1932–1981)
• Freddie Williams (1942–2008)
• William Hill (1903–1971)
• Martin Krugman (1919–1979)
• Frank Rosenthal (1929–2008)
• Cyril Stein (1928–2011)
• Helen Vernet (1876–1956)