James Michael Sadowski (born August 7, 1951) is an American former relief pitcher in Major League Baseball who played briefly for the Pittsburgh Pirates in their 1974 season.

Coming out of a baseball family, he is the nephew of former big leaguers Bob, Ed and Ted Sadowski.

In one-season career, Sadowski posted a 0-1 record and a 6.00 ERA in four relief appearances.

Sadowski also pitched for the Pirates, Kansas City Royals and Cincinnati Reds Minor League systems in parts of 10 seasons spanning 1969–1979.

He went 58-72 with a 3.92 ERA in 248 games (131 starts), walking 617 hitters while striking out 768 in 1,057 innings of work.