Niconico

(known before 2012 as ) is a Japanese video-sharing service on the web launched in 2006. "Niconico" or "nikoniko" is the Japanese ideophone for smiling. As of Q1 2023, Niconico was the 19th most-visited website overall and 2nd most visited (behind YouTube) in the Arts & Entertainment > Streaming & Online TV category in Japan, according to Similarweb. Nico Nico Douga was more popular in Japan for quite some time (before 2015?), but was eventually overtaken by YouTube.

Niconico is owned by which is a subsidiary of Kadokawa.