Sienna Miller is set to make her Broadway debut in a Roundabout Theater Company staging of Patrick Marber’s “After Miss Julie,” opening this fall in one of the Roundabout’s Rialto venues.

Mark Brokaw will direct. He helms the Roundabout’s upcoming Off Broadway production of Lisa Loomer’s “Distracted.”

Marber’s play, which bowed on Brit TV in 1995 and was seen onstage at London’s Donmar Warehouse in 2003, updates August Strindberg’s 19th century drama “Miss Julie” to a country house in England in 1945.

Miller will play Julie, with the rest of the three-person cast to be announced. Previous stage credits for the actress (“Factory Girl,” “Stardust”) include the 2005 West End production of “As You Like It.”

Although a specific venue for “After Miss Julie” has not yet been confirmed, it will play in one of the Roundabout’s Rialto houses, the American Airlines Theater or Studio 54.

Roundabout produces in association with Sonia Friedman Prods. and Ostar Prods.