|Location||Archbishop Cousins Center, Milwaukee, Wisconsin|
|Dates||July 30-August 2, 1999|
Mythcon XXX was the thirtieth annual Mythopoeic Society conference.
- Theme: Bree & Beyond: Exploring the Fantasy Worlds of J.R.R. Tolkien and His Fellow Travelers
- Guest of Honors: Sylvia Hunnewell (fantasy artist), S. Gary Hunnewell (Tolkien scholar), and Douglas A. Anderson (Tolkien and fantasy scholar)
- Chairman: Richard C. West