There are three sporting events named the San Diego Open:

• San Diego Open (golf) is a PGA Tour professional golf tournament played in the La Jolla, San Diego, California, United States
• San Diego Open (tennis) is a tournament on the WTA Tour held on the La Costa Resort and Spa in Stanford, California, United States
• San Diego Open (LPGA Tour) is a former LPGA Tour golf tournament

• History of Bosworth, Missouri
• History of Botetourt County, Virginia
• History of Bothell, Washington
• History of Botoșani
• History of Bottineau, North Dakota
• History of Bottle Recycling in the United States
• History of bottle recycling in the United States
• History of Botucatu
• History of Boudry
• History of Boulder City, Nevada
• History of Boulder, Colorado
• History of Boulder County, Colorado
• History of Boulogne-sur-Mer
• History of Boundary County, Idaho
• History of Bountiful, Utah
• History of Bourbon County, Kansas
• History of Bourbon County, Kentucky
• History of Bourbon, Missouri
• History of Bourges
• History of Bourgogne-Franche-Comté
• History of Bouznika
• History of Bovill, Idaho
• History of Bovina, Texas
• History of Bowbells, North Dakota
• History of Bowdle, South Dakota