鲸歌或鲸语或称作鲸咏指的是人类通过仪器在鲸类交流时搜集到的声音。由于某些种类的鲸（比如座头鲸）常常发出的声音模式是可预测而重复的，所以鲸类学家将其比喻为人类世界中的“歌”声。

不同的鲸类产生的声音方法是不同的。无论如何，由于水对光线的吸收造成视力困难，以及相较空气来说较慢的水流速度使得嗅觉也无用武之地。因此所有的鲸，海豚以及齿鲸亚目动物都比它们的陆地兄弟更加依赖于声音进行交流沟通。由于人类航海产生的大量环境噪声对海洋动物这一重要破坏性影响已经引起环保主义者们的关注。

Whale sounds are used by whales for different kinds of communication.

The mechanisms used to produce sound vary from one family of cetaceans to another. Marine mammals, such as whales, dolphins, and porpoises, are much more dependent on sound for communication and sensation than are land mammals, because other senses are of limited effectiveness in water. Sight is less effective for marine mammals because of the way particulates in the ocean scatter light. Smell is also limited, as molecules diffuse more slowly in water than in air, which makes smelling less effective. However, the speed of sound is roughly four times greater in water than in the atmosphere at sea level. Because sea mammals are so dependent on hearing to communicate and feed, environmentalists and cetologists are concerned that they are being harmed by the increased ambient noise in the world's oceans caused by ships, sonar and marine seismic surveys.