Walter Oswald Lanfranconi (November 9, 1916 – August 17, 1986) was a Major League Baseball pitcher. The 155 lb. right-hander played for the Chicago Cubs (1941) and Boston Braves (1947). His career was unusual in that he went almost six years between major league appearances. Lanfranconi's career totals include a record of 4–5 in 38 games, 70 innings pitched, 19 strikeouts, and an ERA of 2.96. Lanfranconi missed the 1943–45 baseball seasons due to military service with the US Army during World War II.