Acloud point extraction as a preconcentration technique was developed for the determination of a tenua- zonic and a cyclopiazonic acid in tomato juices. These mycotoxins were extracted and preconcentrated using Triton-X 114 as surfactant and determined by high performance liquid chromatography with ultraviolet detection. The optimized extraction conditions were pH 2, 4% Triton X-114 (w/v), 1% KNO3 (w/v), 50°C as the extraction temperature and 30 min for extraction time. The extraction recoveries were found as 40% and 95% for tenuazonic acid and cyclopiazonic acid, respectively. The linearity of the proposed method was in the concentration range of 10 to 2000 ng mL-1 for both mycotoxins.