The Well-being of Future Generations (Wales) Act 2015 (anaw 2) (Welsh: Deddf Llesiant Cenedlaethau'r Dyfodol (Cymru) 2015) is an Act of the National Assembly for Wales that was given royal assent on 29 April 2015; it came into force in April 2016.

A 'sustainable development principle' comprising five aspects is intended to assist in the delivery of the Act's goals and actions; i) long-term thinking, ii) prevention, iii) integration, iv) collaboration and v) involvement.

This part of the Act sets out well-being objectives for Welsh ministers and a duty on public bodies to pursue them also.

Part 4 of the Act establishes public services boards and places a well-being duty upon them.

Part 5 of the Act defines public bodies in the context of the legislation, and sets out regulations and other ancillary matters.