Dennis J. Sullivan (June 26, 1858 – December 31, 1925) was an American utility player in Major League Baseball, playing mainly as a third baseman for the Providence Grays () and Boston Red Caps () of the National League. A native of Boston, Massachusetts, Sullivan attended Boston College and College of the Holy Cross. Listed at , 170 lb., he threw right-handed (unknown batting side).
In a six-game career, Sullivan was a .261 hitter (6-for-23) with six runs, three RBI, and two doubles without home runs. He made six appearances as a third baseman (4), catcher (1) and left fielder (1), and was a member of the Providence 1879 National League champions.
Sullivan died at the age of 67 in his homeland of Boston, Massachusetts.
See also 1879 Providence Grays season 1880 Boston Red Caps season
External links Baseball Reference Retrosheet