To provide a band saw cooler that can supply and recover cooling air and cutting oil to and from a band saw in cutting work.

The band saw cooler includes a box 8 having an internal space 14 enclosed by walls and a pair of slits 11a and 13a where a bared saw 5 passes in opposite wall portions, a partition wall 15 forming a passage for the band saw between the pair of slits 11a and 13a and dividing the internal space 14 of the box 8 into two chambers 16 and 17, a first through port 19 formed in the wall of the box 8 so as to open into one chamber 17 of the internal space 14, a second through port 18 formed in the wall of the box 8 so as to open into the other chamber 16 of the internal space 14, a cooling air and cutting oil supply means 9 connected to the first through port 19, and a cooling air and cutting oil discharge means 10 connected to the second through port 18.