立图亚湾(Lituya Bay)是一个位于美国阿拉斯加州的峡湾(58。633°N 137。567°W）长14，5千米，最宽处3。2千米宽。该湾在1786年由法国人Jean-François de La Pérouse发现并命名。有数条冰川流进此湾（较小的Cascade and Crillon glaciers 和较大的Lituya Glacier 等）立图亚湾以其落差极大的潮汐闻名于世，它西边的出海口很窄，当海水涌进便在湾内形成强劲的水流。1958年7月10日，这里发生了人类记录到的史上最高的海啸，达令人难以置信的524米高。此次海啸是由山泥倾泻引起的。一场地震导致了该湾的南岸产生山体滑坡，大量的固体倾泻进海产生了巨大的浪。巨浪毁坏了三艘渔船并造成二人死亡，也有一对父子侥幸生还。但当巨浪刚出外海，便迅速消失了。这是科学家首次有确凿的证据来证实预想中的“超级海啸（ megatsunamis）”的存在，具有非比寻常的意义。立图亚湾现是美国的冰川海湾国家公园和自然保护区。

Lituya Bay is a fjord located at 58.633, -137.567 in the U.S. state of Alaska. It is 14.5 km (9 mi) long and 3.2 km (2 mi) wide at its widest point. The bay was discovered in 1786 by Jean-François de La Pérouse, who named it Port des Français. 21 of his men perished in the tidal current in the bay. The smaller Cascade and Crillon glaciers and the larger Lituya Glacier all spill into Lituya Bay. The bay is famous for its extremely high tides. The entrance of the bay is very narrow, and the tides going into and out of the bay through the entrance also cause very treacherous currents. The same topography that leads to the heavy tidal currents also created the highest tsunami wave ever recorded anywhere in the world. An earthquake and landslide in Crillon Inlet at the head of the bay on July 10, 1958 generated a monstrous megatsunami 524 metres (1,719 ft) high, which stripped trees and soil from the opposite headland and consumed the entire bay, destroying three fishing boats anchored there and killing two people. By the time the wave reached the open sea, however, it dissipated quickly. This incident was the first evidence and eyewitness report of the existence of. Lituya Bay is a part of Glacier Bay National Park and Preserve.