<P> The 1916 New York Giants hold the record for the longest unbeaten streak in MLB history at 26 wins . The second - longest winning streak is 22 by the 2017 Cleveland Indians , which is still ongoing and the American League record . The Chicago Cubs franchise has won 21 games twice , once in 1880 when they were the Chicago White Stockings and once in 1935 . </P>
<P> The 1916 New York Giants hold the record for the longest unbeaten streak in MLB history at 26 wins . The second - longest winning streak is 22 by the 2017 Cleveland Indians , which is still ongoing and the American League record . The Chicago Cubs franchise has won 21 games twice , once in 1880 when they were the Chicago White Stockings and once in 1935 . </P>
longest win streak in major league baseball history
longest win streak in major league baseball history
26
26