| UDT-3D | |
| Location Country: | Senegal |
| Affiliation: | CNTS |
| Full Name: | Dakar Dem Dikk Workers Democratic Union |
| Native Name: | Union démocratique des travailleurs de Dakar Dem Dikk |
| Headquarters: | Dakar, Senegal |
| Key People: | Mamadou Goudiaby, general secretary |
Dakar Dem Dikk Workers Democratic Union (Union démocratique des travailleurs de Dakar Dem Dikk, UDT-3D) is a trade union of employees of Dakar Dem Dikk (the public transportation network of Dakar, Senegal). The general secretary of UDT-3D is Mamadou Goudiaby, another important leader and negotiator of the union is Christian Salvy. UDT-3D is affiliated to CNTS/FC.