The NOVA Open is a Washington, DC area tabletop wargaming convention with a strong focus on organized play, charity, hobby seminars, and social connection. Over 3,000 gamers attended in 2019.

2020 will see the 11th year of the NOVA Open, whose origins are traced to a 32-person outdoor charity BBQ tournament held in 2009 in Springfield, VA. Its legacy events include a massive Warhammer 40,000 GT, and more than 100 player events in X-Wing, Infinity, Warmachine, Malifaux, and many other large organized play tracks in numerous other game systems.

The convention has grown to host some of the world's best hobby instructors. Over 100 seminars are offered all day, every day of the con. There are also a dozen seminars offered pre-con, including a new Roman Lappat/Massive Voodoo 3-day Advanced Workshop Sun-Tue ahead of the convention. The pre-con seminars have been developed to offer attendees early opportunities to learn from the greats over several hours and to assist in finishing armies ahead of the convention.

The NOVA Open partners with the NOVA Open Charitable Foundation (NOCF) , a formal 501(c)(3) charity, and its sister organization. NOCF has been raising funds and awareness on behalf of critical causes around the world. Its mission is to focus on leveraging the compassion of fellow wargamers and hobbyists worldwide to raise funds for Doctors Without Borders, the Breast Cancer Research Foundation, the Fisher House Foundation, and more. In a single day at NOVA Open 2017, $5,000 was raised in the wake of Hurricane Harvey on behalf of the Houston Food Bank. The total donations since inception - all raised from the single constituency which is the worldwide tabletop wargamer - now exceeds $320,000!