Taiyō Nokku (太陽ノック, Sun Knock) is the 12th single by Japanese idol girl group Nogizaka46. It was released on July 22, 2015. It was number-one on the weekly Oricon Singles Chart, reaching a new record for first week sales by the group, with 609,202 copies. It was the best-selling single in Japan in July, with 629,996 copies. As of November 23, 2015 (issue date) it had sold 678,481 copies. It was also number-one on the Billboard Japan Hot 100. The Japanese television drama series Hatsumori Bemars uses the title song as the theme song.

The center position in the choreography for the title song is held by Rina Ikoma.

^{^}shipments figures based on certification alone