The objective of this thesis was to study effects of cyclic annealing on the microstructure of 304 stainless steel after recrystallization. A two-zone furnace was constructed and the cyclic annealing was achieved by moving specimens between the two temperature zones. Total annealing time and dwelling time at each cycle in the range of 850-950 ํC were the two main variables in this study. Scanning electron micrographs were used for microstructure comparison including grain size and number of sides per grain. Results show that cyclic annealing retarded the grain growth rate as evidenced by the fact that the total annealing time of 30 and 120 min led to the mean grain size between 40 - 50 micrometre range, respectively. However, the grain size variation is widening with increasing total annealing time. These observations may be explained by the reduction in grain boundary mobility during thermal cycling, and the fact that the number of grain sides increases from 4 to 6 as annealing time increases. Intergranular corrosion test in 10% oxalic acid after sensitized specimens at 650 ํC for 5 hrs. indicated that cyclic annealing improves intergranular corrosion resistance when annealing for 30 and 60 min with higher cyclic frequency. Longer annealing time up to 120 min., cyclic annealing has no beneficial effect on intergranular corrosion property.