NASA's Wide-field Infrared Survey Explorer (WISE) mapped the sky at 3.4, 4.6, 12, and 22 μm (W1, W2, W3, W4) with an angular resolution of 6.1", 6.4", 6.5", & 12.0" in the four bands. The WISE All-Sky Image Atlas is comprised of 18,240 4095x4095 pix at 1.375"/pix 18,240 match-filtered, calibrated and coadded FITS format image sets.