Maya Kasandra Soetoro-Ng (née Soetoro; /ˈmaɪ.ə suːˈtɔːroʊ ˈɪŋ/; born August 15, 1970) is an Indonesian-born American academic, who is a faculty specialist at the Spark M. Matsunaga Institute for Peace and Conflict Resolution, based in the College of Social Sciences at the University of Hawaiʻi at Mānoa. She is also a consultant for the Obama Foundation, working to develop the Asia-Pacific Leaders Program. Soetoro-Ng is the maternal half-sister of Barack Obama, the 44th president of the United States.

Soetoro-Ng was born in Saint Carolus Hospital, a Catholic hospital, in Jakarta, Indonesia, the daughter of American cultural anthropologist Ann Dunham (1942–1995), an American of Swiss, German, Irish, Scottish, Welsh and English descent and Indonesian businessman Lolo Soetoro (1935–1987). She had two half-brothers, Barack Obama (born 1961), the 44th president of the United States, and Bayu Yusuf Aji Soetoro (born 1981), and a half-sister, Rahayu Nurmaida Soetoro (born 1984). She also had an adoptive sister, Holiah Soetoro (1957–2010). Soetoro-Ng has said she was named after American poet Maya Angelou.

Soetoro-Ng and Obama spent several years together in Indonesia and in Hawaii before her mother decided to return to Indonesia with her. After her parents divorced in 1980, her father remarried. From this marriage, Soetoro-Ng has another half-brother and a half-sister, who are of no relation or familial connection to Obama.

While living in Indonesia, Soetoro-Ng was home-schooled by her mother. From 1981 to 1984, Soetoro-Ng attended Jakarta International School. Like Obama, Soetoro-Ng returned to Hawaii and attended the private Punahou School in Honolulu, Hawaii, graduating in 1988.

Soetoro-Ng received her B.A. degree from Barnard College of Columbia University. She then received an M.A. in secondary language studies and an M.A. in Secondary Education from New York University. In 2006, she received a Ph.D. in international comparative education from the University of Hawaiʻi at Mānoa.

According to The New York Times, Soetoro-Ng "has often spoken warmly about her relationship with her older brother" and their families have "often celebrated Christmas in Hawaii" together.

Soetoro-Ng is currently a faculty specialist for the Spark M. Matsunaga Institute for Peace and Conflict Resolution, which is based in the College of Social Sciences at the University of Hawaiʻi at Mānoa, as well as a consultant for the Obama Foundation's Leaders Program: Asia-Pacific. Dr. Soetoro-Ng teaches courses on: Peace Education; the History of Peace Movements; and Leadership for Social Change. She also oversees externships for undergraduates who are majoring or minoring in Peace Studies and coordinates the institute's community and global service learning programs.

Soetoro-Ng was an assistant professor at the Institute for Teacher Education at the University of Hawai'i College of Education and continues to do some consulting work, promoting international exchange and understanding, in partnership with the East West Center. She authored a children's book, Ladder to the Moon, that was inspired by her mother and her daughter, Suhaila; it was published in 2011. She is working on a book about peace education and a young adult novel entitled Yellowood.