虾海藻属（学名Phyllospadix）是大叶藻科下的一属海草或拍岸浪草，其下有5个物种。虾海藻属生长在北太平洋温带沿岸的水域。

虾海藻属的物种如下：

• 红纤维虾海藻（Phyllospadix iwatensis）
• 亚洲虾海藻（Phyllospadix japonicus）
• 虾海藻（Phyllospadix scouleri）：模式种。
• Phyllospadix serrulatus
• Phyllospadix torreyi

Phyllospadix, surfgrass, is a genus of seagrass, a flowering plant in the family Zosteraceae, described as a genus in 1840. Phyllospadix grows in marine waters along the coasts of the temperate North Pacific.

It is one of the seagrass genera that can perform completely submerged pollination.