The National Institutes of Health (NIH) is offering the Tobacco Regulatory Science Small Grant Program for New Investigators (R03 Clinical Trial Optional) to support early-stage researchers in tobacco regulatory science. This funding opportunity aims to facilitate small-scale projects that generate data to inform the U.S. Food and Drug Administration's (FDA) regulations on tobacco products, in alignment with the Family Smoking Prevention and Tobacco Control Act (FSPTCA). Eligible applicants include various organizations such as higher education institutions, non-profits, and government entities, with awards of up to $75,000 available for projects lasting up to two years, and a total funding pool of $500,000 anticipated for fiscal year 2026. Interested applicants should submit their proposals through Grants.gov and eRA Commons by the closing date of July 14, 2026, and can direct inquiries to grantsinfo@nih.gov for further information.