Henri Alexis Joseph Vanwaetermeulen (14 July 1862 – 16 July 1918) was a French general of the First World War who began his career as a private soldier. Enlisting into a line regiment in 1883 Vanwaetermeulen was promoted to sergeant major within two years and received his commission within five. He transferred to the Troupes de marine and saw service in several French colonies. In Tonkin Vanwaetermeulen was mentioned in dispatches for leading assaults on two forts and received the Colonial Medal. He saw further service in Madagascar, Senegal and Mauritania, much of it under the command of Joseph Gallieni, and by the outbreak of the First World War was a lieutenant-colonel.