Our New Errand Boy is a 1905 British short silent comedy film, directed by James Williamson, about a new errand boy, engaged by a grocer who soon regrets the appointment. This "relatively unambitious" chase comedy, according to Michael Brooke of BFI Screenonline, "is one of a number of Williamson films featuring a mischievous child, played by the director's son Tom". "Although essentially a series of sketches", this film, according to David Fisher, "demonstrates the extent to which Williamson had developed film technique For a start, the film has a title frame, which includes the logo of the Williamson Cinematograph Company", and, "the chase section anticipates the American comedies of the next decade".

The film stars the director's son, Tom Williamson, one of the first professional child actors, featured in several films, generally directed by his father (who is also an interpreter of the film here).