Denji is a Japanese word meaning "electromagnetic". It may refer to:
People with the given name , Japanese author
Fictional characters Denji (Chainsaw Man), the protagonist of the manga series Chainsaw Man Denji Lightan, a character from the anime television series Golden Warrior Gold Lightan Kudou Denji, a character from the manga series Abara
Series Denshi Sentai Denziman, a part of the Super Sentai franchise Denji Sentai Megaranger, a part of the Super Sentai franchise