  The purpose of this paper is to find conformal vector fields of some perfect
fluid Kantowski-Sachs and Bianchi type III space-times in the f(R) theory of
gravity using direct integration technique. In this study there exists only
eight cases. Studying each case in detail, we found that in two cases proper
conformal vector fields exist while in the rest of six cases conformal vector
fields become Killing vector fields. The dimension of conformal vector fields
is either 4 or 6.
