Scissor macrocephalus is a species of characin endemic to Suriname.

[2] The generic name is based on the Latin for "one who cleaves", and the specific epithet is Greek for "large head".

The species was described from a single specimen, and the description is doubtful.

The binomial is incertae sedis[3] within Characidae and the species may actually properly belong to Oligosarcus.

[4] This Characidae-related article is a stub.