The article examines motivation in higher education and relates it to the concept of sustainability. It consists of a theoretical examination of the terms ‘sustainable motivation’ and ‘academic motivation’, and specifically postulates and explains the concept of ‘sustainable academic motivation’. Sustainable academic motivation is defined as proactive interconnection of basic ideas of sustainability and basic characteristics of academic motivation. With primary attention on disclosing appropriate measures for building sustainable academic motivation, an empirical part presents the results of sociological questioning carried out on n = 181 teachers, administrators, and managers of Slovak and Polish universities. Higher financial evaluation and creating good relationships were found to be the most desirable motivation measures. Results also emphasized a discrepancy between opinions of university managers versus opinions of scientists and teachers regarding effective motivation. Based on the results, and with the support of other opinions, sustainable academic motivation is subsequently defined from five perspectives: (a) As the most important component of conscious behavior; (b) as the starting point of behavior; (c) as the accelerator of behavior and development; (d) as the process; and (e) as the resultative level of all motivational efforts and powers at higher-education institutions. The final part of the article contains recommendations for university management, when affecting and building sustainable academic motivation.