Michael Thomas Baumann (born September 10, 1995) is an American professional baseball pitcher for the Baltimore Orioles of Major League Baseball (MLB). He made his MLB debut in 2021.
The Baltimore Orioles selected Baumann in the third round of the 2017 MLB draft. In 2018, Baumann began the season with the Delmarva Shorebirds of the Class A South Atlantic League. He received a promotion in May to the Frederick Keys of the Class A-Advanced Carolina League. He combined to go 7–6 with a 2.98 ERA and 142 strikeouts over 124 innings in 2019. On November 20, 2020, Baumann was added to the 40-man roster.
On September 7, 2021, Baumann made his major league debut with the Orioles against the Kansas City Royals at Oriole Park at Camden Yards. In his debut he pitched 3.2 innings and allowed two hits and one walk. Baumann struck out one batter and retired 11 of the 14 batters he faced. He also earned his first Major League win.
His older brother, Nick, also played baseball and football at Mahtomedi.