Aim: The purpose of this study was to evaluate the color stability of monolithic zirconia upon exposure to different beverages which were highly consumed in daily life. Materials and methods: After the preparation of 40 monolithic zirconia samples in disc form (10×1.2 mm), they were divided into four subgroups (n=10). The samples in each group immersed in tea, coffee, cola and water at 37°C for 24 hours, 7 days, 15 days and 1 month. Color measurements were performed with the CIE-Lab system using by using spectrophotometer before and after each immersion period in beverages. The data were evaluated by ANOVA and Duncan tests. Results: It was determined that beverage type had significant effect on color stability of zirconia samples (p<0.001; F: 32.908). When examined the ΔE values for samples stored in different beverages, minimum color change were detected in the samples of tea left for 24 hours and maximum color change were detected in the samples of coffee left for 30 days. Conclusions: Color stability of monolithic zirconia is an important indicator for clinicians. The patients which had been treated with the tested materials must be warned about this discolaration.