Wenceslao Gonzales O'Reilly (September 28, 1925 – March 11, 1981) was a Cuban-born professional baseball player during the 1950s and 1960s.

A left-handed pitcher who stood 6 feet 1 inch (1.85 m) tall and weighed 165 pounds (75 kg), Gonzales appeared in one Major League Baseball game in 1955 as a member of the Washington Senators.

Gonzales entered professional baseball in 1951 as a member of the Ciudad Juárez Indios and in his first season, he led the Class C Southwest International League with 32 victories.

[3] In 1955, Gonzales was a member of the Senators' early season roster and appeared in the second game of the campaign, a road contest against the New York Yankees.

Called into the game in the seventh inning with Washington already losing 13–1, he worked the final two frames, allowing six hits, six earned runs and three bases on balls in an eventual 19–1 rout.