Sellier & Bellot (S&B) is a Czech ammunition manufacturer, founded in 1825, that produces high-quality small-caliber ammunition for hunting, sporting, military, and law enforcement applications. As one of the world's oldest ammunition companies, it is known for its wide product range, including lead-free and infrared tracer options, and has a significant export market. The company manufactures its products in-house at its Vlašim, Czech Republic facility and is a subsidiary of the Colt CZ Group.