William S. Yellow Robe Jr. (February 4, 1960 – July 19, 2021) was an Assiniboine actor, author, director, educator, playwright, and poet.

[2] A member of the Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation, Yellow Robe was raised by his mother on the Fort Peck Indian Reservation in Montana.

[4] Yellow Robe's works have been performed in venues across the United States, including the Penumbra Theatre Company in St. Paul;[5] the Public Theater in New York;[6] the Trinity Repertory Company in Providence, RI;[7] and the Smithsonian's National Museum of the American Indian in Washington, D.C.[8] He was a member of Penumbra, as well as the Ensemble Studio Theater,[9] Amerinda, Inc.,[2] and the advisory board for Red Eagle Soaring Native Youth Theatre.

[13] The day after he died, Yellow Robe was named the recipient of a $40,000 award in recognition of his contributions to theatre.

[14] His papers joined the many playwright and poetry archives at the Harry Ransom Center at The University of Texas at Austin in 2022 and are available there for research.