An　environmentally　friendly　and　efficient　electrochemical　chlorination　of　thiophenes　has　been　developed.　The　monochlorination,　dichlorination　and　trichlorination　of　thiophenes　are　selectively　achieved.　Notably,　the　reaction　has　the　merits　of　mild　conditions,　excellent　functional　group　tolerance,　high　yields　and　selectivity,　and　the　capacity　for　scale-up,　thus　providing　a　synthetically　useful　alternative　to　access　mono-　and　polychlorinated　thiophenes.　A　green　and　efficient　electrochemical　method　for　the　selective　monochlorination,　dichlorination,　and　trichlorination　of　2-substituted　thiophenes　has　been　developed.image