Science Fiction Conventions

The below list is of upcoming fan-run and professionally-run science fiction conventions within a few hours drive of the Dayton, Ohio area. Conventions listed as "TBA" or "UNCONFIRMED" were held in the previous 12 months and are projected to continue in the next 24 months but do not have definite dates or locations announced.

Note that these links are provided by Starward Bound as a service to its members. Starward Bound is not responsible for the content or upkeep of these pages. A new browser window will open for each link.

2025

Confusion, January 23-26, Detroit, MI

Ohayocon, January 31-February 1, Dayton, OH

CincyCon, February 28-March 2, Cincinnati, OH

Concoction, March 7-9, Cleveland, OH

FanExpo Cleveland, March 21-23, Cleveland, OH

Buckeye Game Fest, May 1-4, Columbus, OH

Marcon, UNCONFIRMED May 30-June 1, Worthington, OH

ColossalCon, May 28-June 1, Sandusky, OH

Origins, June 18-22, Columbus, OH

InConJunction, July 4-6, Indianapolis, IN

Imaginarium, July 18-20, Louisville, KY

Confluence, July 25-27, Pittsburgh, PA

GenCon Indy, July 31-August 4, Indianapolis, IN

Matsuricon, August 30-31, Columbus, OH

Archon, October 3-5, Collinsville, IL

Starbase Indy, November 28-30, Indianapolis, IN

WorldCon , is the largest annual gathering of science fiction fans from around the world. The convention is held in a different city each year with a new name.
SeattleCon 2025, The 83rd World Science Fiction Convention, August 13-17, Seattle, WA

NASFIC , is held when WorldCon is being hosted outside of the United States.

WFC, World Fantasy Convention, is the largest annual gathering of fantasy fans from around the world. The convention is held in a different city each year.
WFC2025 in Brighton, UK, The 2025 World Fantasy Convention, October 30-November 2, Brighton, England.

Bouchercon, is the largest annual gathering of Mystery fans from around the world. The convention is held in a different city each year but is always called Boucheron.
Bouchercon 2025 New Orleans, The 2025 World Mystery Convention, September 3-7, New Orleans, LA.

FanCons Listings, reviews and blogs to various fan run conventions.

This page last updated: 15-January-2025 DMM