Jefferson Haynes is a Philadelphia-based actor and improviser, who performs regularly at PHIT with Resident Group Everything Must Go. He has been performing in the Philadelphia area since 2003, appearing on stage with Arden Theatre Company, Azuka Theatre, Interact Theatre Company, People's Light & Theatre, and Philadelphia Theatre Workshop.

In the improvisation world, Jefferson was a founding member of Gurus of Guffaw before joining EMG. He has workshopped with members of the Upright Citizens Brigade Theatre.

When he's not performing, he enjoys building stuff out of wood and steel, teaching acting, and playing games with his son.