Geoff Senior (born 1960) is a British artist, best known for his work in the comic book field in the 1980s, mainly for Marvel UK.
He worked on a number of other titles for Marvel UK, including Doctor Who Magazine (1988), Dragon's Claws (which he co-created with Simon Furman, and drew all ten issues of), Death's Head (another character he helped create, initially as a guest star for Transformers) and Action Force Weekly, as well as several Marvel UK annuals.
He followed Furman across to Marvel USA in 1989, drawing Transformers US #61, and four more issues before the title's cancellation, including the classic #75.
The Senior/Furman team returned for the first issue of Titan Comics' (UK) Transformers in August 2007, in which Senior produced the art for a new story based on the live-action movie characters and events (subsequently reprinted by IDW Publishing in the US).
In 2019 Senior and Simon Furman started their own company, Forged by Fire Productions, for the purpose of publishing their own comic, To the Death.