Peter Alex Wilson (October 9, 1885 – June 5, 1957) was a professional baseball pitcher. Wilson played in Major League Baseball for the New York Highlanders in 1908 and 1909. In 20 career games, he had a 9–8 record with a 3.26 ERA. He threw left-handed.
Wilson was born in Springfield, Massachusetts, and died in St. Petersburg, Florida.