Jefferson Mays (born Lewis Jefferson Mays; June 8, 1965) is an American theatre and film actor.
A Connecticut native, Mays trained at Yale College, where he received a Bachelor of Arts degree, and the University of California, San Diego, where he earned an Master of Fine Arts. He has appeared at La Jolla Playhouse, Long Wharf Theatre, the Williamstown Theatre Festival, and Playwrights Horizons.
In 2004, Mays won the Tony Award for Best Performance by a Leading Actor in a Play, the Drama Desk Award for Outstanding One-Person Show, an Obie Award, and a Theatre World Award for his solo Broadway performance in I Am My Own Wife, a Pulitzer Prize-winning play by Doug Wright. In 2007, Mays starred in two highly acclaimed Broadway revivals: Pygmalion, in which he won critical praise as Henry Higgins, and a well received revival of Journey's End in which he starred as Private Mason.
Mays is married to Australian actress Susan Lyons.