There are many ways to produce carbon nanotubes and nanofibers, such as arc discharge, laser vaporization, chemical vapor deposition (CVD), etc. The most promising mass production-wise method is the CVD that uses metal catalytic particles, and is known as catalytic CVD (CCVD). Its advantage lies in the ease of controlling the growth conditions to obtain nanotubes with different layers, diameters, and morphologies. In this paper, we briefly introduce the CCVD method and show various nanotubes and fibers obtained from the method.