Denden-gū, Shinto shrine in Arashiyama, Japan

Denden-gū is a small Shinto shrine within the grounds of Hōrin-ji in Nishikyō-ku, Kyoto. It is dedicated to Denden Myōjin, a deity of lightning and electricity. The shrine building was rebuilt in 1969, and nearby stands the Denden Tower, a monument with copper portraits of Thomas Edison and Heinrich Hertz.

The shrine was destroyed by fire in 1864 during the Hamaguri Rebellion and remained in temporary structures for decades before its 1956 restoration. This reconstruction marked its return to a permanent and dedicated space.

The shrine is dedicated to Denden Myōjin, a lightning deity also linked to rice farming. Since 1956 it has been revered as patron of electricity and radio waves, drawing computer engineers, programmers and telecom operators. Its annual festival is held on 23 May.

Denden-gū stands inside the grounds of Horin-ji in Nishikyō-ku, Kyoto, so it is reached through the temple precinct. The shrine is a small subsidiary building, not a separate address; look for it among the temple structures on the slope below Mount Arashiyama.

The Denden Tower, a monument on the temple grounds, bears copper portraits of Thomas Edison as representative of electrical researchers and Heinrich Hertz as representative of radio-wave researchers. The tower was erected in 1956 together with the revival of the shrine, and the Denden-gū support association formed in 1979 maintains both structures.