Maiacetus ("mother whale") is a genus of early cetacean from the Habib Rahi Formation of Pakistan.

[3] However, Hans Thewissen, discoverer of Ambulocetus, has questioned these conclusions, suggesting that the smaller skeleton could be a partially digested meal.

Looking at the flattened finger and toe bones, scientists have come to the conclusion that Maiacetus had webbed feet and was most likely amphibious.

The incisors are cone-like, linking Maiacetus to modern toothed whales and other extinct cetaceans.

[5] This species is medium-sized with a skeleton 2.6 metres (8.5 ft) in length and an estimated weight of 280 to 390 kilograms (620 to 860 lb).