Carbon nanotubes are recent materials with an extremely appealing multiplicity of peculiar characteristics of paramount interest in contemporary advanced (nano)technologies. At the same time, the Langmuir-Blodgett technique allows to fabricate films with a substantial control and chance of modulation over thickness and molecular organisation. As a spontaneous outcome, this review deals with an actual subject of attention in up-to-date scientific investigations, i.e. the preparation, characterisation and applications of Langmuir-Blodgett films of pristine or functionalised single-or multi-walled carbon nanotubes in modern research.