The highest attainable standard of health is a fundamental human right as envisaged in important international human rights instruments. Biosensors have the prospect to introduce revolutionary changes in the promotion, preservation, and protection of human health, which are fundamental to enjoy other human rights. The biosensors are also promising in the monitoring of various components of the environment and biodiversity, and thus, can be used to attain some of the 2030 United Nations Sustainable Development Goals. With all the promises, there remain some legal, regulatory, and ethical challenges and concerns as well. This is because, in the different stages of the cradle-to-grave life cycle of scientific research and product development, many stakeholders are involved, and various legal and ethical issues evolve. While the ongoing R&D activities should be continued for the betterment of mankind, consideration of relevant ethical and legal issues should not be ignored. Various international and national bodies, having the authority to guide effective regulation and development of scientific