Newton Henry Allen (May 19, 1901 – June 9, 1988) was an American second baseman and manager in baseball's Negro leagues.

Long known for his leadership ability, he became the Monarchs' manager in 1941 when Andy Cooper suffered a pre-season stroke and died during the season.

A master at scoring runs, he bunted, stole bases and almost always provided the spark his team needed to win.

Among the fastest baserunners of his generation of Negro leaguers, his most remarkable season was his 1929 campaign, in which he batted .330 while hitting 24 doubles and stealing 23 bases in a typically abbreviated Negro league season.

Allen is listed on the second team of a 1952 Pittsburgh Courier poll of the greatest black baseball players of all time.