While there aren't specific actors voicing the entire Minutemen organization, here are some of the prominent characters and their voice actors:
* Preston Garvey: Voiced by Robb Jeffrey Brown
* Father: Voiced by Michael Gough (this is the name given to the Sole Survivor's companion from the Institute)
* Tessa: Voiced by Jennifer Hale
Keep in mind that the Minutemen are primarily composed of random settlers you encounter throughout the Commonwealth, meaning many of them are voiced by various other actors.
Is there anything else you'd like to know about the Minutemen or their actors?