German submarine U-217

German submarine U-217 was a Type VIID mine-laying U-boat of the Nazi German Kriegsmarine during World War II.

She was laid down on 30 January 1941, launched on 15 November and commissioned on 31 January 1942, U-217 served with the 5th U-boat Flotilla in a training capacity before moving on to the operational 9th flotilla on 1 August 1942 until she was sunk. U-217 completed three patrols and sank three ships totalling.

She was sunk on 5 June 1943 in the mid-Atlantic with all hands by depth charges dropped by Grumman TBF Avengers from the escort carrier USS Bogue (CVE-9). The wreck lies at 30.3°N, -42.83333°W, near the Mid-Atlantic Ridge.