Matthew Martin "Matty" McIntyre (June 12, 1880 – April 2, 1920) was an American outfielder in Major League Baseball who played ten seasons with the Philadelphia Athletics (1901), Detroit Tigers (1904–10), and Chicago White Sox (1911–12).

Born in Stonington, Connecticut, and raised in Staten Island, New York, he helped the Tigers win the American League pennant three times, from 1907 to 1909.

His best season was 1908, when he helped lead the Tigers to the World Series and was the second best hitter in the American League (behind teammate Ty Cobb).

Despite his impressive performance on the field, McIntyre may be best remembered as the leader of the "anti-Cobb" clique on the Tigers during Cobb's early years.

Cobb's legendary temper only added fuel to the fire, and the McIntyre-Cobb feud continued until McIntyre was sold to the White Sox after the 1910 season.