Oreo O's
| Post Oreo O's, with milk | |
| Product type | breakfast cereal | 
|---|---|
| Owner | Post Consumer Brands Kraft Foods Inc. (1997–2012) Mondelez International (2012–present) | 
| Country | Oreo Headquarters, New Jersey | 
| Introduced | 1997 (1st run, globally) 2003 (South Korea) 2016 (2nd run, South Korea) 2017 (2nd run, globally) | 
| Discontinued | 2007 (1st run, globally) 2014 (1st run, South Korea) | 
| Markets | Worldwide (1997–2007, 2017–) South Korea (2003–2014, 2016–) | 
| Nutritional value per 1 cup (30 g) | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy | 120 kcal (500 kJ) | ||||||||||||||||||||||||
| 21.52 | |||||||||||||||||||||||||
| Sugars | 11.45 | ||||||||||||||||||||||||
| Dietary fiber | 1.49 | ||||||||||||||||||||||||
| 1.5 | |||||||||||||||||||||||||
| Saturated | 0.43 | ||||||||||||||||||||||||
| Trans | 0 | ||||||||||||||||||||||||
| 1.28 | |||||||||||||||||||||||||
| 
 | |||||||||||||||||||||||||
| Other constituents | Quantity | ||||||||||||||||||||||||
| Cholesterol | 0 | ||||||||||||||||||||||||
| †Percentages estimated using US recommendations for adults, except for potassium, which is estimated based on expert recommendation from the National Academies. | |||||||||||||||||||||||||
Oreo O's is a breakfast cereal that consists of Oreo-flavored O-shaped pieces of cereal. It was conceived of by an Ogilvy & Mather NYC advertising employee and introduced in 1997 by Post Cereals. In 2001 the cereal got a new recipe with real creme filling. A variation of Oreo O's called Extreme Creme Taste Oreo O's contained Oreo filling-flavored marshmallows.
The cereal was launched in 1997 and discontinued in 2007 everywhere other than South Korea. In May 2017, Post Cereals announced that it would restart production of Oreo O's starting June 23 and continue production indefinitely.