Myriophyllum implicatum is a species of water milfoil in the family Haloragaceae.

[1] Native to Australia, it occurs from the Gulf of Carpentaria, through southern Cape York Peninsula north-eastern New South Wales and eastern Queensland.

[1][3] In New South Wales, it is listed as critically endangered,[4] but under the Nature Conservation Act 1992 of Queensland it is listed as of least concern.

[5] Myriophyllum implicatum is a creeping dioecious herb, which roots freely at its nodes.

[2][4] The red-purple fruit is sessile and cube shaped.