William Denton "Dolly" Gray (December 4, 1878 – April 4, 1956) was an American left-handed professional baseball pitcher who played from 1909 to 1911 for the Washington Senators.

A 30-year-old rookie, Gray made his major league debut on April 13, 1909.

In total, Gray allowed 11 walks that game, giving up six runs and earning the loss in the process.

On April 12, 1911, Gray threw the very first pitch in Griffith Stadium history.

He also won the game that day, beating opposing pitcher Smoky Joe Wood.

[5] In 2008, Gray was inducted into the Pacific Coast League Hall of Fame, along with Wheezer Dell, Casey Stengel and Lee Susman.