The Sci-Fi London Film Festival, also known as the London International Festival of Science Fiction and Fantastic Film, is an annual film festival based in the United Kingdom dedicated to the science fiction and fantasy genres. Founded in 2002, the festival screens a variety of works including short films, feature films, and relevant documentaries. Beyond film screenings, Sci-Fi London also hosts the awards ceremony for the prestigious Arthur C. Clarke Award. The festival has utilized various venues across London, with events scheduled at the Rich Mix Arts Centre for 2026.