Margaret "Peg" Hillias (June 24, 1914 – March 18, 1960) was an American actress of stage, film and television.
Born in Council Bluffs, Iowa, Hillias first acted as a student at Northeast High School. She also acted at the Kansas City Theater and the Resident Theater.
On radio, Hillias was the lead actress in Manhattan Mother and worked in three other serials. She also participated in USO entertainment overseas during World War II.
Hillias portrayed Eunice Hubbell, neighbor to Stanley and Stella Kowalski in A Streetcar Named Desire, which she played on Broadway and reprised in the film version, starring Vivien Leigh and Marlon Brando.
Hillias died on March 18, 1960, in St. Luke's Hospital in Kansas City from complications that followed heart surgery.