SM U-17 or U-XVII was a U-10-class submarine or U-boat of the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K.

Kriegsmarine) during World War I. U-17 was laid down in Germany in April 1915 and shipped in sections by rail to Pola in August, where she was assembled.

[1][3] When completed, the submarine was broken down into sections, loaded onto railcars, and shipped to the Austro-Hungarian Navy's main base at Pola on 30 August.

[5][Note 2] The boat patrolled the Italian coast out of Pola for most of the next two months, interrupted by engine repairs in mid November.

On 23 February, Hudeček attempted an attack on a cargo ship off Durazzo, but was discovered and depth charged.

Two days later, a failed attack on a steamer resulted in another depth charging of U-17, this time by an Orfeo-class torpedo boat.

A foray to Bari in July provided another opportunity to attack a steamer, but the torpedoes missed their mark.

[4] On 16 August, U-17, by now under the command of Linienschiffsleutnant Hermann Rigele,[5] attempted a torpedo attack on a cargo ship off Saseno.

At the end of October, U-17 escaped damage from a torpedo attack by an enemy submarine near Cape Menders, Albania.