Daniel Francis "Dashing Dan" Costello (September 9, 1891 – March 26, 1936) was an American Major League Baseball outfielder. Costello played for the New York Yankees and the Pittsburgh Pirates from 1913 to 1916. In 154 career games, he had 85 hits, 24 RBIs and a .243 batting average. He batted left and threw right-handed. Costello was born in Jessup, Pennsylvania, and died in Pittsburgh, Pennsylvania.
Dan Costello
| Given name: | Daniel Francis Costello |
| Nicknames: | Dashing Dan |
| Primary Pos: | Leftfield |
| Hght/Wght: | 6'0" / 185 lbs |
| Bats/Throws: | L / R |
| Born: | Sep 9, 1891 in Jessup, PA |
| Died: | Mar 26, 1936 in Pittsburgh, PA (44 years old) |
| Debut: | Jul 2, 1913 |