The International Organization for Standardization or ISO does exactly what it says in the title - it is a worldwide organisation, which sets standards for a wide variety of disciplines.
Some of the standards relevant to our particular industry include:
ISO 27001 - which is about general information security management, and was published jointly with the IEC.
ISO 15408 - which is also commonly referred to as Common Criteria, or and is about the security evaluation of IT systems.
ISO 21434 - which is about the cyber security of road vehicles, and was published jointly with SAE International (a professional association of automotive and aerospace engineers).
ISO 44001 - which is about collaborative business relationship management.