Guido Guidi is an Italian comic book artist and penciller.

A longtime Transformers fan, Guidi was brought in by Dreamwave Productions to be artist for their Transformers: Armada comic, doing issues #8-13 and returning for #18 after a four issue run by Don Figueroa.

Along with other Dreamwave era artists like Figueroa and James Raiz, Guidi was brought in by IDW Publishing when they acquired the Transformers licence in 2005.

His more recent work includes The Transformers: Spotlight issues on Galvatron and Mirage, profile art for the Beast Wars: Sourcebook series and the final issue of Beast Wars: The Ascending, as well as work on issue 5 of Titan UK's Transformers magazine.

His most recent work has been as the principal artist on the All Hail Megatron maxi-series.