Walter Smith III (born September 24, 1980) is an American jazz saxophonist and composer.

In addition to performing with his own group, Smith is a member of the Ambrose Akinmusire Quintet and Eric Harland's Voyager.

Smith has performed in numerous national and international festivals and on stages in the U.S. such as Carnegie Hall and the Kennedy Center.

He has shared the stage and recorded with many jazz notables, including Terence Blanchard, Roy Haynes, Christian McBride, Eric Reed, Mulgrew Miller, Joe Lovano, Bob Hurst, Myron Walden, Walter Beasley, Lewis Nash, Terri Lyne Carrington, and others.

[2] Smith's debut recording as a leader was released in March 2006 on the Fresh Sound New Talent label and features Ambrose Akinmusire, Aaron Parks, Reuben Rogers, Eric Harland, and Kendrick Scott, and others.