Dao Khanong (Thai: ดาวคะนอง, also spelled: ดาวคนอง; pronounced [dāːw kʰā.nɔ̄ːŋ]) is a khwaeng (sub-district) of Thon Buri district, Bangkok's Thonburi side.

It is named after the Khlong (canal) Dao Khanong, which runs through the area and is regarded as the right tributary of Chao Phraya River, which connects the Chao Phraya River with Khlong Bang Khun Thian in the Bang Khun Thian, Chom Thong and Rat Burana areas.

There are many buildings and neighbourhoods that have Mon roots, such as Wat Nang Nong, or tambon Song Khanong in Phra Pradaeng District, Samut Prakan Province (across the Chao Phraya River).

[4][5] Dao Khanong was mentioned in "Nirat Mueang Klaeng" (นิราศเมืองแกลง), the travelogue poetry by the poet Sunthorn Phu in the early- Rattanakosin period.

[4] Around 1970s–1990s, Dao Khanong was an area that was well known as the center for watch and glasses shops of Bangkok.