COSine 2026
COLORADO SPRINGS SCIENCE FICTION CONVENTION
January 23-25, 2026
Guest of Honor
Cory Doctorow
Science Fiction Author (Picks and Shovels, The Lost Cause, many others), Activist, Journalist
COSine has been held in Colorado Springs since 2004, and features numerous sci-fi and fantasy authors, artists, and fans, as well as panels, art show, author signing & reception, gaming, science & technology, dealers room, kids’ programming, liquid nitrogen ice‑cream, and more!
Embassy Suites by Hilton Colorado Springs
7290 Commerce Center Drive, Colorado Springs, CO 80919
719-599-9100 • map
Ask for the special COSine convention rate when reserving your room!
COSine is a production of First Friday Fandom!