This dataset contains publicly available tweets related to the Fridays for Future (FFF) climate strikes in 2019. The tweets were collected using Twitter’s API and include metadata such as tweet text, hastags, user mentions, timestamps, location of tweet, favorites, retweet counts. Due to Twitter’s data-sharing policies, this dataset does not include raw tweet content or user-identifying information. Instead, it provides tweet IDs, which can be used to retrieve the original tweets via the Twitter API. Researchers can use this dataset to analyze the spread of climate activism on social media, information cascades, and network effects. Keywords: Twitter, Fridays for Future, Climate Strike, Social Network Analysis,