is an internet services company in Japan. It operates various services including the most popular social bookmarking service in Japan, Hatena Bookmark. Hatena is the collective name of the company's services. On July 19, 2001, it was founded by Junya Kondo in Kyoto. The company moved its headquarters to Shibuya, Tokyo on April 10, 2004. The headquarters were moved back to Kyoto in April, 2008.
Hatena is a Japanese term meaning "question". It may refer to:
- Hatena arenicola, species of single-celled eukaryotes
- Hatena (company), an internet services company in Japan