Gaining a clear understanding of publication trends and research themes helps researchers determine gaps in the existing literature and explore new areas of study. The objective of this current inquiry is to describe the research themes related to nanolearning and microlearning in general. The bibliometric method was employed using the Lens Scholarly Search Database from year 2020 to 2024. Additionally, “nanolearning” and “microlearning” were used as queries on the title, keyword, and abstract. Using the analysis from the database and VOSviewer, the publication-related metrics of the scholarly works were determined including the research themes, frequent keywords, and authors' collaboration. Results revealed that there is a growing trend in the use of nanolearning and microlearning in different subjects and contexts. Visualization analysis identified three (3) emergent research themes, namely: (1) the use of nanolearning and microlearning during the pandemic and post-pandemic period, (2) evaluation of the effectiveness of the approaches, and (3) applications and development of tools and strategies. Conversely, nanolearning remains an emerging area with a lower publication count in the analysis. Moreover, Indonesia and the United States are the leading countries in publications. Further, the study revealed active collaboration among authors. Lastly, it is recommended to explore nanolearning as a complementary approach to microlearning.