spokesperson

n noun
UK (br) /ˈspəʊksˌpɜː.sən/ ˈስፐውክስˌፐː.ሰን
US /ˈspoʊksˌpɝː.sən/ .ˈስፖውክስ.ˌፐአርː.ሰን
1. an advocate who represents someone else's policy or purpose
the meeting was attended by spokespersons for all the major organs of government;
Synonyms: ['interpreter', 'representative', 'voice']