The International Society of Substance Use Prevention and Treatment Professionals (ISSUP) is a global, not for profit, non-government organisation to support the development of a professional prevention and treatment network. It serves as a focal point for information about substance use prevention and treatment. ISSUP’s contribution is informed by science and research, promoting evidence based, high quality and ethical approaches and practice to substance use prevention and treatment. It does this through this unique website, providing access to up to date information and support for the substance use prevention and treatment community. The website, along with an annual international meeting also offers training and networking opportunities as well as resources that support the professionalisation of the workforce. ISSUP Vision A connected, trained, knowledgeable, and effective international network of substance use prevention and treatment professionals undertaking and promoting high-quality, evidence based, and ethical substance use prevention and treatment. ISSUP Mission To establish Substance Use Prevention and Treatment as a unique and multidisciplinary field through the professionalisation and development of its network of substance use prevention and treatment professionals. ISSUP Aims ISSUP is a membership organisation, developing a professional workforce with the competencies and skills required to deliver high quality, evidence-based, ethical prevention and treatment services. ISSUP aims to: - Represent the international and national communities of substance use prevention and treatment professionals - Develop and deliver knowledge systems for evidence-based prevention and treatment - Provide opportunities for and access to training, education, and credentials - Offer communication and networking opportunities taking place online and at ISSUP events