Butjadingen is a peninsula and municipality in the Wesermarsch district, in Lower Saxony, Germany.

The peninsula was formed during the Middle Ages when huge floods created today's North Sea coastlines.

After the Second Marcellus Flood on January 13, 1362 (which occurred around the day of Marcelli Pontificis) Butjadingen temporarily became an island.

In front of the peninsula is the Wadden Sea which stretches between the Jade's and the Weser's mouths about 23 kilometers to the northwest beyond the Mellum island.

There are ferries across the Weser from Nordenham to Bremerhaven and (during summer months) across the Jade from Eckwarderhörne to Wilhelmshaven.