Barbara Marx Sinatra (née Blakeley; March 10, 1927 – July 25, 2017) was an American model and showgirl. She was born in Bosworth, Missouri. She was married to Zeppo Marx from 1959 to 1973 and was the fourth and final wife of Frank Sinatra from 1976 until his death in 1998.
- Sinatra, Barbara (2011). Lady Blue Eyes: My Life With Frank. 172 pp. Crown Archetype. New York.
- Palm Springs Walk of Stars by date dedicated
- Sasha Savitsky (July 25, 2017). "Barbara Sinatra, wife of Frank Sinatra, dead at 90". Fox News. Retrieved July 25, 2017.