THE COVID-19 PANDEMIC LED TO A SIGNIFICANT SHIFT TOWARDS MORE INNOVATIVE TEACHING METHODS, HIGHLIGHTING THE NEED FOR CONTINUOUS AND FLEXIBLE LEARNING APPROACHES. THUS, IT IS RELEVANT TO EXPLORE THE CASUISTRY OF THE VARIOUS APPLICATIONS OF MICROLEARNING AND NANOLEARNING IN HIGHER EDUCATION, AND IDENTIFY THE THEMATIC TRENDS AND TOPICS LITTLE EXPLORED IN THE PANDEMIC AND POST-PANDEMIC SCENARIO. IN THIS SENSE, THE PURPOSE OF THIS STUDY IS TO CARRY OUT A BIBLIOMETRIC REVIEW UNDER A QUANTITATIVE APPROACH AND AT AN EXPLORATORY-DESCRIPTIVE LEVEL, ON THE EXISTING LITERATURE IN THE SCOPUS DATABASE. AS A RESULT, IT WAS POSSIBLE TO IDENTIFY THAT THE COVID-19 PANDEMIC HAS INFLUENCED SCIENTIFIC PRODUCTION IN THE APPLICATION OF MICROLEARNING IN HIGHER EDUCATION TO A GREATER EXTENT WITH RESPECT TO NANOLEARNING. FURTHERMORE, THE PREVALENT THEMES IDENTIFIED IN THE EXISTING LITERATURE ARE THE EFFECTIVENESS...