Donald Paul Kirkwood (born September 24, 1949) is an American former professional baseball pitcher who played five seasons for the California Angels, Chicago White Sox, and Toronto Blue Jays of Major League Baseball (MLB).

In his first three minor league seasons, he had a win–loss record of 20–14 before making his MLB debut.

In January 2020, he was inducted in the Hollie L. Lepely Hall of Honor class.

He currently works at a total sports complex, giving pitching lessons.

This biographical article relating to an American baseball pitcher born in the 1940s is a stub.