Cheung On Estate is a public housing estate in Tsing Yi Island, New Territories, Hong Kong built partly on the former peninsula of Tam Kon Shan and partly on the reclaimed land of Mun Tsai Tong in Tsing Yi North near Tsing Yi Northeast Park and MTR Tsing Yi station. It consists of ten residential blocks completed between 1987 and 1989. Among 7,338 flats in the estate, 5,617 flats have been sold to the residents under the TPS Phase 1 since January 1998.