Back Buttermilk Channel (agianan sa Tinipong Bansa, New York) CEB Buttermilk Channel German Buttermilk Channel English バターミルク水路 Japanese Buttermilk Channel Dutch Buttermilk Channel Portuguese
Buttermilk Channel on umbes 1,6 km pikkune ja 0,4 km laiune kitsas väin, mis asub Upper New York Bays. See eraldab Governors Islandit Brooklynist.
Sealsed loodete hoovused on üsna tugevad.