A method for making electronic cigarette cartridges. The method includes a step of making the cartridges along a dedicated production line. The step of making the cartridges includes a step of making a casing by assembling one or more components along a first stretch of the production line and a step of making an electric module by assembling one or more electronic elements along a second stretch of the production line. The steps of making the casing and the electric module are steps which are synchronized and independent relative to one another. Once the steps of making the casing and the electric module are complete, the method includes a step of assembling the casing with a respective electric module to obtain the finished cartridge along a shared third stretch of the production line.