Otto Louis of Salm, Wild- and Rhinegrave of Kyrburg and Mörchingen (13 October 1597 – 6 October 1634, Speyer) was a Swedish general during the Thirty Years' War.
He was governor in the Alsace and Commander of the Swedish troops in the Upper Rhine.
He died of the plague at Speyer and was buried in Strasbourg Cathedral.
His parents were John IX of Salm-Kyrburg-Mörchingen (1575–1623) and Anna Catherine, Baroness of Criechingen (d.