Union Sénégalaise des Travailleurs (Senegalese Workers Union) was a trade union federation in Senegal formed in 1962.
The founders of UST included members of the erstwhile 'orthodox' faction of UGTAN.
[1] The UST was however divided.
In October 1964, one wing of UST merged into UNTS.
The following month, the remainder of UST founded the Confederation sénégalaise du travail (CST).