The invention relates to novel substituted thiene-3-ylsulphonylamino(thio)carbonyl-triazolin(ethi)ones of the formula (I) ##STR00001## in which Q.sup.1, Q.sup.2, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined in the disclosure, except for prior-art compounds. The invention further relates to the preparation of the compounds, to their use as herbicides, and to herbicidal compositions comprising the novel compounds.