Pellworm is one of the North Frisian Islands on the North Sea coast of Germany. It is part of the Nordfriesland district in the federal state of Schleswig-Holstein. Its area is 37 kmē, and its population is 1,200.

In medieval times Pellworm was a part of the larger island of Strand which was torn into pieces in a disastrous storm tide in 1634. Other remnants of Strand are Nordstrand and the Halligen islets.

Pellworm is accessible by a ferry departing from the neighbouring island of Nordstrand (which is in turn connected with the mainland by a bridge).