The U-10 class was a class of five submarines or U-boats of the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K. Kriegsmarine) during World War I. The class was similar to the German Type UB I submarine of the German Imperial Navy (German: Kaiserliche Marine); the first two boats delivered to Austria-Hungary had previously been commissioned in Kaiserliche Marine.