No, Martin Dupont is not a goth band, because they play Synthpop, while goth music consists of Gothic Rock and its derived genres, like Deathrock, Darkwave, Ethereal Wave, and Coldwave.

If you want to dive into the goth music scene, some of the bands that might appeal to you if you enjoy Martin Dupont are Lebanon Hanover, Little Nemo, and The Frozen Autumn.