As manager William Corcoran Phillips (November 9, 1868 – October 25, 1941), nicknamed "Whoa Bill" or "Silver Bill", was an American right-handed pitcher and manager in Major League Baseball.

At the age of twenty-one, Phillips broke into the big leagues on August 11, 1890, playing his first ten games for the Pittsburgh Alleghenys.

Five days later, on August 16, 1890, Phillips, pitching against the Chicago Colts, gave up two grand slam home runs in the same inning.

In 1899, he went 17–9 on a team that featured nineteen-year-old rookie Sam Crawford and manager Buck Ewing.

Later he and Bill McKechnie managed the Newark Pepper, finishing the 1915 season fifth in the Federal League.