Ken Macha, American baseball player and manager
Kenneth Edward Macha (; born September 29, 1950) is a former Major League Baseball third baseman and manager. He managed the Oakland Athletics from 2003–2006, including American League Western Division championships in both his first and final seasons with the team, and later managed the Milwaukee Brewers (2009–10).

Previously, Macha played for the Pittsburgh Pirates, Montreal Expos and Toronto Blue Jays in a span of six seasons from 1974–1981. He was a first cousin to Hal Newhouser. In the offseason, he lives in Murrysville, Pennsylvania with his family. Macha frequently appears on Root Sports Pittsburgh as a postgame analyst for the Pirates.