Martha Howe-Douglas is an English actress and writer. She is most famous as a member of the Them There collective with which she wrote and starred in productions including Horrible Histories, Yonderland, and Ghosts. She also played receptionist Donna Parmar in the BBC One daytime soap Doctors.

Them There is a theatrical production collective made up of a group of comedy writers and performers, notable for working on a range of projects together including Horrible Histories, Yonderland, and Ghosts. They are also informally referred to as the Horrible Histories troupe and The Six Idiots.