The effective utilization of CNT material in composite applications depends strongly on their ability to be dispersed individually and homogeneously within a matrix. An optimized interfacial interaction between the CNT sidewalls and the matrix should result in an efficient load transfer to the “hard” component of the composite. All processing methods known thus far for CNT-based composites are described below. Due to the huge volume of related literature, only the seminal works will be discussed for each processing method.