Denno is a comune in Trentino, Italy.
Denno may also refer to:
Law Stovall v. Denno, a 1967 United States Supreme Court case
People Dale Denno (1950–2019), American politician Deborah Denno (born 1952), American legal scholar Robert Denno (1945–2008), American insect ecologist
Television Dennō Bōkenki Webdiver, Japanese mecha anime series Dennō Coil, Japanese science fiction anime series Dennō Senshi Porygon, episode of the first season of the Pokémon! series
See also Deno (disambiguation) Cyberteam in Akihabara, a Japanese science fiction anime series also known as Akihabara Dennō Gumi Dennos Museum Center, a fine art museum in Traverse City, Michigan