John V, Count of Sponheim-Starkenburg (c. 1359 - 24 October 1437) was a German nobleman.
He was the son of John IV, Count of Sponheim-Starkenburg and Elisabeth of Sponheim.
He was the last of the Sponheim-Starkenburg line - after his death the county split between Jacob, Margrave of Baden-Baden and Frederick III, Count of Veldenz.
These were the grandsons of his two aunts Mathilda and Loretta of Sponheim.
This article about a member of the German nobility is a stub.