卵叶盐藻（学名：Halophila ovalis）为水鳖科盐藻属下的一个种。

Halophila ovalis, commonly known as paddle weed, spoon grass or dugong grass, is a seagrass in the family Hydrocharitaceae. It is a small herbaceous plant that occurs in sea beds and other saltwater environments in the Indo-Pacific.

The first description of the species was by Robert Brown as Caulinia ovalis, this was transferred to the genus Halophila by Joseph Dalton Hooker in Flora Tasmaniae (1858). The species name Halophila ovata is now regarded as a synonym of this species.