Ban Chang (Thai: บ้านฉาง, pronounced [bâːn t͡ɕʰǎːŋ]) is the westernmost district (amphoe) of Rayong province, eastern Thailand.

The area originally was Tambon Phala of Mueang Rayong district.

From 1963 on the US military used the U-Tapao Royal Thai Navy Airfield, thus the community grew bigger.

[2] Neighbouring districts are (from the west clockwise) Sattahip, Bang Lamung of Chonburi province, Nikhom Phatthana and Mueang Rayong of Rayong Province.

There are a further three tambon administrative organizations (TAO) responsible for non-municipal areas.