The research objectives were to study the stress in Anti-Aircraft Artillery Regiment officers in Thailand and to compare these stresses through quantitative method. The research used questionnaire to study 325 persons. The statistics used were mean, standard deviation, and one-way ANOVA. The research found that: 1. There is only a low stress in the overall with a mean of 2.53. By aspect, It was discovered, with a mean of 3.25, that the sample's excessive worrying and anxiousness prevented them from falling asleep, followed by feeling irritable and disturbed with a mean of 2.75, and feeling unhappy and sadden with a mean of 2.54; And 2. The comparison showed that Anti-Aircraft Artillery Regiment officers with different age, marital status, and rank have different level of stress at statistically significant difference of 0.05.