B
- Balance – Malt-O-Meal
- Banana Frosted Flakes – Kellogg's (1981)
- Banana Nut Crunch – Post Cereals (1994 – present)
- Banana Nut Granola Cereal – Sunbelt
- Baron von Redberry – General Mills (1972)
- Bart's Peanut Butter Chocolate Crunch – Kellogg's (c.2001)
- Basic 4 – General Mills
- Batman Cereal – Ralston (1989–1990)
- Batman Returns Cereal – Ralston (1992)
- The Batman Cereal – Post Cereal (2005)
- Bear Naked – Kashi
- Berry Basic – Sunbelt
- Boo-Berry
- Berry Berry Kix – General Mills (1992 – present)
- Berry Berry Nice – Hubbards Foods
- Berry Bones Scooby-Doo – Kellogg's (2005)
- Bigg Mixx – Kellogg's (1990–1992)
- Bill & Ted's Excellent Cereal – Ralston – (1989)
- Blueberry Morning – Post Foods (1995 – present)
- Blueberry Muffin – General Mills (1980s)
- Blueberry Muffin Tops – Malt-O-Meal
- Body Buddies – General Mills (1980s)
- Bran & Apricot – Hubbards Foods
- Bran Flakes – Kellogg's – (1915 – present) – (various generic versions under same name)
- Breakfast with Barbie – Ralston (1980s)
- Buc Wheats cereal – General Mills (discontinued)
- Bunuelitos – General Mills (discontinued)
- Buzz Blasts – Kellogg's/Disney (2002)
Read more about this topic: List Of Breakfast Cereals