阿刀神社, Shinto shrine in Japan

Ato Shrine is a small Shinto shrine located in Kyoto that stands in a quiet residential area near the flow of the Arisugawa River. The simple structure features old stone steps leading to a modest shrine building, with a tall sacred cedar tree marking the entrance path.

The shrine was founded during the Heian period and received official rank from the imperial court in 866, indicating its importance to the region. The Ato family, connected to the shrine, relocated to the Kyoto area as the capital city was being established.

The name Ato derives from the ancient Ato clan, whose ancestor Amenoshitashiroshiro no mikoto is named in the Shinsen Shōjiroku of 815; some scholars instead link "Ato" to atsu, an old word for valley, and call the deity a water god. The shrine appears in the Engishiki register of 927 as a shikinaisha of Kadono District, Yamashiro Province.

The shrine stands in Sagano Hirozawa Minamino-cho, a residential part of Ukyo-ku; the Arisugawa river runs nearby. Only a small shrine building remains, so there is no gate or hall to tour. Visitors approach on foot through the neighbourhood streets.

The shrine's name points to the Ato clan, an ancient family recorded in the 815 Shinsen Shōjiroku as Ato no Sukune and Ato no Muraji, branches of the Mononobe descended from Amenooshihi's grandson Minoshitada. Their original base was Atobe in Shibukawa, Kawachi Province, near today's Atobe Shrine in Yao, Osaka; the move to Kyoto followed the transfer of the capital to Heian-kyō.