The coat of arms of Ludwigsburg depicts a black eagle on a golden banner flying on an oblique red lance, on a blue background. Duke Eberhard Louis, Duke of Württemberg awarded Ludwigsburg its coat of arms on 3 September 1718 as a Reichssturmfahne, which had been part of the Duchy of Württemberg's own coat of arms since 1495. There were some minor changes made to the design, as it had already been associated with the town of Markgröningen. A missive from the office of the mayor of Ludwigsburg in 1759–60 mentions its flag.
