Tboung Khmum District (Khmer: ស្រុកត្បូងឃ្មុំ) is a district (srok) located in Tbong Khmum Province, Cambodia. The district capital is Tboung Khmom town located around 20 kilometres east of the provincial capital of Kampong Cham by road. Tboung Khmum was formerly a central district of Kampong Cham before Tbong Khmum Province was formed from land formerly part of Kampong Cham. The district shares no borders with other provinces and is home to the huge Chup Rubber plantation.