海蟾蜍（学名：Bufo marinus），又名美洲巨蟾蜍、甘蔗蟾蜍、蔗蟾蜍或蔗蟾，是原产于中美洲及南美洲一种热带地区陆生的蟾蜍，后来被引入澳洲，广泛的分布在澳洲大陆的东海岸和北部地区。牠们的繁殖能力很强，一次就可以产达几千颗卵。成体长10-15厘米；纪录最大的标本重达2.65公斤及长38厘米。

海蟾蜍有毒腺，蝌蚪对于大部份动物也是有具有剧毒的。牠们被引入到多个国家来控制害虫，不过由于没有天敌反而成为了害虫及入侵物种。国际自然保护联盟物种存续委员会的入侵物种专家小组（ISSG）列为世界百大外来入侵种。

The cane toad (Rhinella marina), also known as the giant neotropical toad or marine toad, is a large, terrestrial true toad which is native to South and mainland Middle America, but has been introduced to various islands throughout Oceania and the Caribbean, as well as northern Australia. It is a member of the genus Rhinella, but was formerly in the genus Bufo, which includes many different true toad species found throughout Central and South America. The cane toad is a prolific breeder; females lay single-clump spawns with thousands of eggs. Its reproductive success is partly because of opportunistic feeding: it has a diet, unusual among anurans, of both dead and living matter. Adults average 10–15 cm (3.9–5.9 in) in length; the largest recorded specimen weighed 2.65 kg (5.8 lb) with a length of 38 cm (15 in) from snout to vent.