The field of firearm injury and violence (FIV) research in the health sciences has been impacted by federal funding restrictions over the last two decades, leading this field to be one of the least researched leading causes of death. Little is known about the funding status and funding sources of published articles in this field. We performed a scoping review of FIV publications in the health sciences with the goal of characterizing the funding sources for firearm injury research during the past 20 years. We identified health sciences articles published in journals between January 2000 and December 2019 and indexed in PubMed through keyword searches for explicitly firearm-focused literature. Four reviewers independently screened 6,266 articles to include original, empirical research articles whose core objective addressed the causes, consequences, prevention, or characterization of firearm injury or violence in the U.S. Articles where the reviewers disagreed were reviewed by a senior researcher. A total of 812 articles were included and subsequently examined for evidence of a funding source. Our analysis showed that 119(14.7%) of the articles explicitly declared not having received any funding for the study, and 240(29.6%) articles had no explicit declaration of funding. 453(55.8%) of the included articles declared at least one source of funding. Among those with funding, 232(51.2%)of the articles were found to have reported at least one philanthropic grant and 221(48.9%) reported at least one federal grant. While the total volume of original, empiric research more than tripled from 2000 through 2019, the number of articles reporting funding was 31.9% lower in 2019 than in 2000 (87.5%; 95% CI: 16.7%-47.2%). The results of this study show promise for the future of FIV research funding, aid current firearm researchers who hope to identify new opportunities for funding and demonstrate the current limited financial resources available to researchers.