Sustainability transformations require active, ongoing support from various stakeholders. However, stakeholders are less likely to actively participate in the process if they perceive higher education institutions (HEIs) not demonstrating sufficient, appropriate, or consistent commitment to sustainability transformation. Therefore, authentic sustainability communication with stakeholders is of great importance for a successful sustainability transformation of HEIs. This chapter examines the challenges that arise when HEIs communicate their sustainability commitments in ways that are inconsistent with their actual actions, stakeholder expectations, or core values. It reviews evolving research on corporate social responsibility (CSR)-related tensions, organizational hypocrisy, and greenwashing in the context of HEIs. By referencing concepts and tools from stakeholder and expectations management, this chapter presents criteria and strategies for enhancing the authenticity of HEI sustainability communication. This guidance aims to help HEIs genuinely uphold their sustainability commitments and “walk the talk,” thereby mitigating the risk of organizational hypocrisy and greenwashing.