Using topic mapping techniques, we provide a review of the 3,236 articles published in the five premier HRD journals between 1990 and 2019. We map the key terms evidencing the emergence of five major topic clusters within HRD scholarship: nature and identity of HRD, HRD interventions and outcomes, national HRD, career development, and HRD in academia. Nature and identity of HRD depicts a movement from establishing foundations to expanding horizons. HRD interventions and outcomes reflects a spectrum of research interests from exploring processes to examining desired outcomes. National HRD shows that research topics are increasingly moving toward international and global settings. Career development demonstrates a shift from emphasizing organizational careers to advocating for under‐represented career actors. HRD in academia encompasses topics related to educating HRD professionals and supporting professional development in other fields. We provide a synthesis of the clusters, create a taxonomy of topic areas, and identify the mature, nascent, trending, and growing concepts in HRD. In doing so, our paper provides an overview of where we are in HRD scholarship. We then suggest collaborative, competitive, and configurational boundary work as strategies that HRD scholars can use purposefully to influence future HRD research directions. Our findings inform HRD researchers and can guide interested practitioners in their search for actionable knowledge in HRD.