The 1913 Detroit Heralds season was the ninth season for the Detroit Heralds, an independent American football team. Led by coach Bill Marshall, the team compiled a 7–0 record, shut out seven opponents, and allowed only six points during the entire season. In addition to playing teams from within the State of Michigan, the 1913 Heralds also played and defeated teams from Canada (the Windsor Independents), Ohio (the Cleveland Tomahawks), and Illinois (Eckersall's Maroons from Chicago).
The Heralds' undefeated season in 1913 was followed by a second consecutive undefeated season in 1914, a winning streak that lasted 17 games.