The Newark Colts were a minor league baseball team based in Newark, New Jersey. From 1896 to 1900, the Colts played exclusively as members of the Atlantic League, winning the 1896 league championship. The Colts hosted home games at the Hamburg Place Ballpark. The ballpark site evolved to become Wiedenmayer’s Park in 1902 and today's Riverbank Park, which is listed on the National Register of Historic Places.

The Atlantic League was a minor league baseball league that operated between 1896 and 1900 in the Northeastern United States. It was the successor of the Pennsylvania State League, which had operated from 1892 to 1895. The name has subsequently been reused twice, for another short-lived league in 1914, and for a contemporary independent minor league.