Sar Kheng (Khmer: ? ???; born 15 January 1951) is a Cambodian politician.
One of the highest-ranking members of the ruling Cambodian People's Party, he is the current Minister of the Interior and has served as a Deputy Prime Minister since 1992.
He also represents the province of Battambang in the Cambodian Parliament.
Kheng has been the Minister of the Interior since 1992.
Until March 2006, he shared the position with FUNCINPEC party member You Hockry as co-Ministers of the Interior, but then became sole interior minister in a cabinet reshuffle as FUNCINPEC ended its coalition with the CPP.
He is currently the second longest serving government minister of Cambodia after Prime Minister Hun Sen.
On June 14, 2015, King Norodom Sihamoni awarded Kheng the honorary title of "Samdech".
His official title is "Samdech Kralahom Sar Kheng" (?????????????? ? ???).
Kheng is married to Nhem Sakhan with whom he has three children.