Sunita Williams was born in Euclid, Ohio, to Indian American neuroanatomist Deepak Pandya and Slovene American Ursuline Bonnie (Zalokar) Pandya, who reside in Falmouth, Massachusetts. She is the youngest of three children. Her brother Jay Thomas is four years older and her sister Dina Annadj is three years older. Williams's paternal family is from Jhulasan in the Mehsana district in Gujarat, India, while her maternal great-grandmother Mary Bohinc (originally Marija Bohinjec), born in Slovenia, immigrated to America as an 11-year-old with her mother, 1891 Slovene emigrant Ursula (Strajhar) Bohinac. Williams graduated from Needham High School in Needham, Massachusetts, in 1983. She received a Bachelor of Science degree in physical science from the United States Naval Academy in 1987, and a Master of Science degree in engineering management from Florida Institute of Technology in 1995.