| Wally Millies | |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 18 October 1906 |
| Birth Place: | Chicago, Illinois |
| Death Place: | Oak Lawn, Illinois |
| Debutleague: | MLB |
| Debutdate: | September 23 |
| Debutyear: | 1934 |
| Debutteam: | Brooklyn Dodgers |
| Finalleague: | MLB |
| Finaldate: | May 21 |
| Finalyear: | 1941 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .243 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 65 |
| Teams: |
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Walter Louis Millies (October 18, 1906 – February 28, 1995) was an American professional baseball player, scout and manager whose career began in 1927 and extended into the 1970s. Born in Chicago, he was a catcher during his playing days who threw and batted right-handed and was listed as 5feet tall and . During World War II, he served in the United States Navy.
Millies appeared in 246 games in Major League Baseball over all or parts of six seasons (1934; 1936–1937; 1939–1941) for the Brooklyn Dodgers, Washington Senators and Philadelphia Phillies. He compiled a .243 career batting average with 158 hits, including 20 doubles and three triples, with 65 runs batted in. His finest season came in with Washington, as he set personal bests in plate appearances (229), runs scored (26), hits (67), and batting average (.312). He started 58 games as the Senators' backup catcher, playing behind left-handed-hitting Cliff Bolton.
Millies had a long career as a minor league manager following his big-league playing career, including a stint as the skipper of the Kinston Eagles of the Coastal Plain League. Then he was a scout for the New York Mets, Houston Astros and Montreal Expos, based in Oak Lawn, Illinois.
He died in Oak Lawn at the age of 88.