泥海蜷（学名：Terebralia palustris），是中腹足目海蜷科泥海蜷属的一种。主要分布于印度尼西亚、**，常栖息在红树林沼泽中。

Terebralia palustris, common name the giant mangrove whelk, is a species of brackish-water snail, a gastropod mollusk in the family Potamididae. This tropical species which inhabits mangrove environments of the Indo-West Pacific region, has the widest geographic distribution amongst the potamidids extending from eastern Africa to northern Australia. Terebralia palustris is the largest mangrove gastropod, with a maximum shell length of 190 mm recorded from Arnhem Land, Australia.