Ionospheric variations after the 2010 Chile Earthquake were studied using ground-based GPS receiver data over Chile. The earthquake occurred at 0634UT (0334LT) on February 27, 2010. The magnitude was 8.8. The epicenter located at 35.8S and 72.7W. Around this area, many ground-based GPS receivers are operated by several institutes such as International GNSS Service and Low Latitude Sensor Network. We used more than 60 receivers’ data in order to clarify Total Electron Content (TEC) variations associated the earthquake. Four categories of TEC variations were found associated the earthquake; Category 1. Rapid (~4-5 minutes) enhance, Category 2. Slow (~20 minutes) enhance, Category 3. Depletion, and Category 4. Periodic fluctuation.TEC enhancements such as Categories 1 and 2 have been reported by Otsuka et al. 2006. Properties of the reported enhancement are consistent with those of Categories 1 and 2. Both of rapid and slow TEC enhancements were observed at some stations, which locate ~1000km north of the epicenter. It suggests that two types of TEC enhancements may be generated and propagate individually. Acoustic resonance could also contribute to the periodic fluctuation (Category 4). We will show the characteristics of those TEC variations and discuss the generation mechanism in our presentation.