Barnabas Sibusiso Dlamini (15 May 1942 – 28 September 2018) was a Swazi politician. He was Prime Minister of Eswatini, from 1996 to 2003 and again from October 2008 to September 2018. He was also an executive director of the International Monetary Fund (IMF).
In 2017, Dlamini was admitted to an ICU in April 2018 in Mbabane.
Dlamini died September 28, 2018, less than a month after stepping down as Prime Minister at age 76.