There are many companies that produce cast iron cookware in the USA. Some of the popular brands include Lodge, Finex, Stargazer, and Field Company. These companies use high-quality materials to produce cast iron skillets, Dutch ovens, and other cookware that is highly durable, long-lasting, and has excellent heat retention properties. Additionally, they are known for their traditional craftsmanship and attention to detail, making their products a popular choice for home cooks and professional chefs alike.