This paper provides an overview of the uses of per- and polyfluoroalkyl substances (PFAS), which are widely used in various industries and consumer products. Over 1400 individual PFAS are identified across more than 200 use categories, including well-known applications such as textile impregnation, fire-fighting foam, and electroplating, as well as less commonly discussed uses like PFAS in ammunition, climbing ropes, guitar strings, artificial turf, and soil remediation. The study highlights that PFAS are used in almost all industrial sectors and many consumer products, with more than 200 use categories and subcategories identified. The paper also discusses the chemical identities of PFAS used in these applications and provides a list of PFAS per use category, including their exact masses for future analytical studies. The study emphasizes the need for identifying essential and non-essential uses of PFAS to develop alternatives. The paper also includes data from various sources, including patents, scientific studies, and product registries, to provide a comprehensive overview of PFAS uses. The study concludes that PFAS are used in a wide range of applications, with some uses being essential for health, safety, or societal functioning, while others may be eliminated if alternatives are available. The paper also discusses the challenges in identifying PFAS uses, including data limitations and the need for more detailed information on PFAS applications. The study provides a detailed list of PFAS and their uses, which can support the identification of essential and non-essential uses of PFAS.This paper provides an overview of the uses of per- and polyfluoroalkyl substances (PFAS), which are widely used in various industries and consumer products. Over 1400 individual PFAS are identified across more than 200 use categories, including well-known applications such as textile impregnation, fire-fighting foam, and electroplating, as well as less commonly discussed uses like PFAS in ammunition, climbing ropes, guitar strings, artificial turf, and soil remediation. The study highlights that PFAS are used in almost all industrial sectors and many consumer products, with more than 200 use categories and subcategories identified. The paper also discusses the chemical identities of PFAS used in these applications and provides a list of PFAS per use category, including their exact masses for future analytical studies. The study emphasizes the need for identifying essential and non-essential uses of PFAS to develop alternatives. The paper also includes data from various sources, including patents, scientific studies, and product registries, to provide a comprehensive overview of PFAS uses. The study concludes that PFAS are used in a wide range of applications, with some uses being essential for health, safety, or societal functioning, while others may be eliminated if alternatives are available. The paper also discusses the challenges in identifying PFAS uses, including data limitations and the need for more detailed information on PFAS applications. The study provides a detailed list of PFAS and their uses, which can support the identification of essential and non-essential uses of PFAS.