B15

B15 or B-15 may refer to:

• B15 (New York City bus), a New York City bus line
• Ampeg Portaflex B-15 bass amplifier, introduced in 1960
• HLA-B15, an HLA-B serotype
• Iceberg B-15, the largest iceberg on record as of 2006
• London Buses route B15
• Pangamic acid, commonly referred to as B15
• Boeing XB-15, a U.S. bomber
• Bundesstraße 15, a German road
• Boron-15 (B-15 or ¹⁵B), an isotope of boron
• One of the ECO codes for the Caro–Kann Defence in chess
• Nissan Sentra chassis code, years 2000–2006
• A nickname for Brandon Marshall, Denver Broncos wide receiver
• LNER Class B15, a class of 20 British steam locomotives