Walter Newton Justis (August 17, 1883 – October 4, 1941), nicknamed "Smoke", was a Major League Baseball pitcher who played in 1905 with the Detroit Tigers. He batted and threw right-handed. Justis had a 0–0 record, with an 8.10 ERA, in 2 games, in his one-year career.
He spent several years playing professional ball in various minor leagues. In 1908, he set a still-standing minor league record by pitching four no-hitters for the Lancaster Lanks. In 1913, his last season, he famously threw a shutout to win the home opener for the premiere season of the Covington Blue Sox at Federal Park (two blocks from where a sports bar now carries his namesake).
He was born in Moores Hill, Indiana, and died in Greendale, Indiana.