Is there caffeine in green tea?

Yes, green tea does contain caffeine. While the amount of caffeine in green tea is generally lower than in coffee, it still has more caffeine than most other teas, such as black tea, oolong tea, and white tea. The amount of caffeine in green tea can vary depending on the type of green tea, how it is brewed, and other factors. On average, a cup of green tea contains around 25-30 milligrams of caffeine.