Ethics involves examining values and identifying what is good, right, and justified and why. Diverse values and ethical issues run through healthcare improvement, but they are not always recognised or given the attention they need. While much effort goes into understanding whether intervention X effectively leads to change Y, questions such as 'is X ethically acceptable?', 'does Y count as an improvement?', 'should Y be prioritised?', and 'if so, why?' are sometimes neglected. This Element demonstrates the ethical considerations and rich array of values that inevitably underpin both the goals of healthcare improvement (what aspects of quality or what kinds of good are pursued) and how improvement work is undertaken. It outlines an agenda for improvement ethics with the aim of helping those involved in healthcare improvement to reflect on and discuss ethical aspects of their work more explicitly and rigorously. This title is also available as Open Access on Cambridge Core.