The 102nd New York Infantry Regiment ("Van Buren Light Infantry") was an infantry regiment in the Union Army during the American Civil War. The regiment played a prominent part in numerous key battles in both the Eastern and Western theaters of the war. It was noted for its holding the high ground at the center of the line at Antietam as part of Stainrook's 2nd Brigade, Greene's 2nd Division of Mansfield's XII Corps. It was further highly regarded for its actions at the Battle of Gettysburg, the Battle of Lookout Mountain, and the Atlanta Campaign.