Leonard Church (March 21, 1942 – April 22, 1988) was a pitcher in Major League Baseball for the Chicago Cubs.
A student at Lane Technical High School in Chicago, he was signed as a free agent by the Cubs in 1963.
After spending four seasons in the minors, Church made his MLB debut on August 27, 1966, allowing one run in two innings of work in a 5–4 Cubs loss to Houston.
Church made one more appearance in his MLB career, relieving Bill Hands on September 4 of the same season.
He played five more seasons in the minor leagues, mostly with the AAA Tacoma Cubs, before hanging up his spikes in 1971 at age 29.