Technical Abstract: Callicarpenal and intermedeol are two terpenoids isolated from American beautyberry (Callicarpa americana L., Verbenaceae) leaves. The repellency of these two terpenoids against workers of red imported fire ants, Solenopsis invicta Buren, black imported fire ants, Solenopsis richteri Forel, and a hybrid of these two species was evaluated using multiple-choice digging bioassays. A total of six colonies, two colonies from each species and hybrid, were tested. Callicarpenal showed significant repellency at concentration as low as 50.00 ppm against S. invicta and 6.25 ppm against S. richteri and the hybrid. Intermedeol showed significant repellency at 0.75 to1.50 ppm against S. invicta, 6.25 ppm against S. richteri, and 1.50 to 6.25 ppm against the hybrid. Callicarpenal and intermedeol were compared with octanoic acid, a known fire ant repellent, at the 25.00 ppm level using two-choice digging bioassays. Callicarpenal showed significantly greater repellency than octanoic acid against both S. richteri colonies and one hybrid colony; however, there was no significant difference between callicarpenal and octanoic acid for both S. invicta colonies and the other hybrid colony. Intermedeol showed significantly greater repellency than octanoic acid against all colonies of S. invicta, S. richteri and the hybrid colonies.