Following decades of research and development, commercial products enabled by nanoparticles are poised to have broad impact in diverse sectors of the global economy, ranging from electronics to healthcare to energy. However, applications of nanoparticles have been limited by challenges at all stages of the manufacturing process, from production and purification, to characterization and integration of nanoparticles into products. The recent "Advancing Nanoparticle Manufacturing" workshop gathered experts from industrial, governmental, and academic sectors to discuss these technical challenges, as well as application forecasts, market insights, and inter-sector collaborations. Through this discussion, this NIST workshop aimed to develop a better understanding of the challenges currently limiting the manufacturing of nanoscale particles, rods, and tubes in the liquid phase, and thus inform future innovations advancing beyond these limits. The CNST sponsored the "Advancing Nanoparticle Manufacturing" workshop under the auspices of the NIST Nanomanufacturing Initiative. The organizers of this NIST Workshop are currently preparing a report for publication.