We report the results of our optical (VRI) photometric observations of the TeV blazar 1ES 0806+524 on 150 nights during 2011–2019 using seven optical telescopes in Europe and Asia. We investigated the variability of the blazar on intraday as well as on long-term timescales. We examined fifteen intraday light curves for flux and color variations using the power-enhanced F-test and the nested ANOVA test. Only on one night was a small, but significant, variation found, in both V band and R band light curves. The V − R color index was constant on every one of those nights. Flux density changes of around 80% were seen over the course of these eight years in multiple bands but no significant trends
in color were detected.