Joseph Moser (1748 – 22 May 1819) was an English artist, author, and magistrate.
He was made magistrate for Westminster in 1794 and published political pamphlets, dramas, and fiction.
While still quite young he was placed with his uncle, George Moser, to train at the Royal Academy as an artist in enamel.
Moser did not intend to follow this profession, though he remained in the Royal Academy until his marriage to Elizabeth Liege in 1780.
In 1808 he was presiding magistrate in the case of James Hardy Vaux following the latter's arrest for the theft of a silver snuff box, and a vivid account of the courtroom examination is preserved in Vaux's memoirs.