扬马延（挪威语：Jan Mayen）是一个位于北冰洋的火山岛屿，是挪威的领土。岛长约55 km（34 mi），面积约 377 km（146 sq mi） ，贝伦火山附近约114.2 km（71.0 mi）被冰川所覆盖，约占岛上约1/3的面积。气候恶劣，寒冷多雾。

岛上无常住人口，仅有约18至35名的挪威军人及挪威气象研究所工作人员生活在居民点奥伦金拜恩。

Jan Mayen is a volcanic island in the Arctic Ocean and a part of the Kingdom of Norway. It is 55 km (34 mi) long (southwest-northeast) and 373 km (144 sq mi) in area, partly covered by glaciers (an area of 114.2 km (71.0 mi) around the Beerenberg volcano). It has two parts: larger northeast Nord-Jan and smaller Sør-Jan, linked by a 2.5 km (1.6 mi) wide isthmus. It lies 600 km (370 mi) northeast of Iceland (495 km (305 mi) NE of Kolbeinsey), 500 km (310 mi) east of central Greenland and 1,000 km (620 mi) west of the North Cape, Norway. The island is mountainous, the highest summit being the Beerenberg volcano in the north. The isthmus is the location of the two largest lakes of the island, Sørlaguna (South Lagoon), and Nordlaguna (North Lagoon). A third lake is called Ullerenglaguna (Ullereng Lagoon). Jan Mayen was formed by the Jan Mayen hotspot.