Mark Clapham (born 1976) is a British author, best known for writing fiction and reference books for television series, in particular relating to Doctor Who (and its spin-offs) and Warhammer 40,000.
Clapham started out writing Doctor Who fan fiction and, through Seventh Door Fanzines, began to work with Lance Parkin.
Notable fan fiction work included Integration, a novella in Seventh Door's Odyssey series, edited by Parkin.
Having been asked to write a New Adventure (a Bernice Summerfield novel for Virgin Publishing) for the November 1998 slot, Parkin found himself too busy with other commitments to write a book on his own and, with editor Rebecca Levene's blessing, brought in Clapham as a co-author.
Clapham was later offered the final Virgin Benny slot and, with a tight deadline, brought in Jon de Burgh Miller as his co-writer on Twilight of the Gods.