The Workshop on ns-3 (WNS3) was a single day workshop held on June 19, 2019, hosted by the Department of Information Engineering, University of Florence, Italy. The objective of the workshop is to gather ns-3 users and developers, together with networking simulation practitioners and users, and developers of other network simulation tools, to discuss the ns-3 simulator and related activities.

The WNS3 is part of a week-long annual meeting for ns-3, including ns-3 training on June 17-18, and a specialized workshop on next-generation wireless with ns-3 on Friday June 21. On Thursday June 20, the annual meeting of the ns-3 Consortium was held, as well as some software development discussions.

Proceedings are published in the ACM digital library.