Kampong Leaeng District (Khmer: ស្រុកកំពង់លែង) is a district (srok) in the north east of Kampong Chhnang Province, in central Cambodia. The district capital is Kampong Leaeng town located around 4 kilometres east of the provincial capital of Kampong Chhnang in a direct line. Kampong Leaeng District is the northernmost district of Kampong Chhnang. The district shares a border with Kampong Thom province to north and east. Much of the district is low lying floodplain and the Tonle Sap river runs through the district roughly from north to south. In the south of the district are two significant mountains.