The 1991 Philadelphia Phillies season was the 109th season in the history of the franchise. The team finished with a 78–84 record. This was also the last season the team wore the 1970–91 era uniforms. The next season, the Phillies would bring back the old Wiz Kids era uniforms which has remained their current uniform to this day.

• December 17, 1990: Danny Cox was signed as a free agent by the Phillies.^[1]
• January 11, 1991: Jim Lindeman was signed as a free agent by the Phillies.^[2]

On April 28, 1991, the Phillies recorded the first triple play in the history of Veterans Stadium.^[3] Tony Gwynn lined to second baseman Randy Ready. Ready stepped on second, and although he could have tagged the runner, threw to first baseman Ricky Jordan.^[4]

On May 6, 1991, Lenny Dykstra slammed his Mercedes-Benz red sports car into two trees while driving home from a bachelor party.^[5] Dykstra, suffered three broken ribs, a broken right collarbone and a broken right cheekbone. A broken rib punctured a lung and his heart was bruised, according to doctors.^[5] Phillies' catcher Darren Daulton was also in the car with Dykstra. Daulton suffered a broken left eye socket, a scratched left cornea and a heart bruise, doctors said.^[5]

On May 23, 1991, Tommy Greene threw a no-hitter against the Montreal Expos in Montreal. Greene was starting for only the second time in the season and 15th time in his major league career. He became the first visiting pitcher to hurl a no-hitter in Montreal's history as the Phillies defeated the Expos, 2–0 before an Olympic Stadium crowd of 8,833. Greene was pitching in place of Danny Cox who had suffered a pulled groin in his last start. Greene walked seven batters but also struck out 10.^[6]

Playing against the Cincinnati Reds on June 14, 1991, Von Hayes was hit by a pitch by Tom Browning^[7] which broke his arm. Hayes returned to action on September 6, 1991, against Houston. Hayes was traded to the California Angels in the off-season but Hayes would later cite Browning's pitch as ending his career, "I broke my arm when I was hit by a pitch from Tom Browning... and I was finished. I tried to make a comeback (with California) in 1992, but it was no good."^[8]

From July 30 to August 12, the Phillies won 13 straight games, tying the franchise record (in the modern era) set by the 1977 Phillies. The Phillies swept the Montreal Expos twice during the streak and made up nine games in the standings. The streak also helped them move from last place in the NL East to third by season's end.

On October 6, 1991, the most strikeouts were recorded against the Phillies in franchise history as David Cone of their division rival New York Mets struck out 19,^[9] tying a then-National League record for most strikeouts in a game, set by Steve Carlton against the Mets in their championship season of 1969 and Tom Seaver the following year.^[9] It was also the most strikeouts ever recorded by a pitcher at Veterans Stadium.^[9] The Mets won the game 7–0.

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