Sebastian Daniel "Sibby" Sisti (July 26, 1920 – April 24, 2006) was an American Major League Baseball utility player.

After returning from the war, where the Braves had no place for him in their lineup, he spent most of 1946 with the Indianapolis Indians of the American Association, hitting .343 for that club and winning The Sporting News Minor League Player of the Year Award.

[3] In 1948, Sisti played a key role in the club's run to the World Series, filling in for injured second baseman Eddie Stanky for part of the season.

The last page of The Great American Baseball Card Flipping, Trading and Bubble Gum Book (by Brendan C. Boyd & Fred C. Harris, Little Brown & Co, 1973) had a card of Sisti in his Braves uniform catching a ball, with the authors' caption, "Goodnight, Sibby Sisti, wherever you are."

Sisti was a first cousin of Dan Carnevale, a minor league manager who made the majors in 1970 with the Kansas City Royals as a first base coach.