Sadao may refer to:

Places

* Sadao, Buachet - Buachet District - Surin Province, North-Eastern Thailand * Sadao, Nang Rong - Nang Rong District - Buriram Province, North-Eastern Thailand * Sadao, Phlapphla Chai - Phlapphla Chai District - Buriram Province, North-Eastern Thailand * Sadao, Sadao - Sadao District - Songkhla Province, Southern Thailand * Sadao, Tat Thong - Mueang Yasothon District - Yasothon Province North-Eastern Thailand

Other uses

* Sadao (given name), a masculine Japanese given name * Neem (in Thai: sadao; Khmer: sdao) a tree in the mahogany family Meliaceae {{disambiguation, geo