The Legacy Survey is producing an inference model catalog of the sky from a set of optical and infrared imaging data, comprising 14,000 square degrees of extragalactic sky visible from the northern hemisphere in three optical bands (g,r,z) and four infrared bands. The sky coverage is approximately bounded by -18deg %3C delta %3C +84deg in celestial coordinates and |b||b| > 18deg in Galactic coordinates. The DECam Legacy Survey is providing these data in the equatorial region at delta %3C +30deg using the Dark Energy Camera on the Blanco Telescope. The color images are based on the g,r,z filters. Data Release 5 (DR5) is the fifth public data release of the Legacy Surveys. DR5 imaging is first reduced through the NOAO Community Pipeline before being processed using the Tractor. Images from DECaLS g,r,z-band observations are included from August 2014 through May 2017. DR5 also includes DECam data from a range of non-DECaLS surveys, including observations that were conducted from September 2012 to May 2017.