René Murat Auberjonois (born June 1, 1940) is an American actor, known for portraying Father Mulcahy in the movie version of M*A*S*H and for creating a number of characters in long-running television series, including Clayton Endicott III on Benson (for which he was nominated for an Emmy Award), Odo on Star Trek: Deep Space Nine, and attorney Paul Lewiston on Boston Legal.

Auberjonois was born in New York City. His mother was Princess Laure Louise Napoléone Eugénie Caroline Murat (1913-1986), a great-great granddaughter of Joachim Murat, King of Naples, and his wife Caroline Bonaparte, sister of the Emperor Napoléon. His maternal grandmother, Hélène Macdonald Stallo (1893-1932), was an American, from Cincinnati, Ohio; his maternal grandfather's mother was a Russian noblewoman, Eudoxia Michailovna Somova (1850 - 1924), and his maternal grandfather's paternal grandmother, Caroline Georgina Fraser, was also an American, from Charleston, South Carolina.

His father, Swiss born Fernand Auberjonois (1910–2004), was a Cold War-era foreign correspondent and Pulitzer Prize-nominated writer, and his grandfather, also named René Auberjonois, was a Swiss post-Impressionist painter. He has a sister and a brother and also two half-sisters from his mother's first marriage.