“The most people performing a kata is 3,973, achieved by Prefectural Government of Okinawa and Society for the Advancement of Traditional Okinawa Karate (both Japan), in Naha, Okinawa, Japan, on 23 October 2016.

Karate practitioners of all ages performed the most basic kata in Okinawan Karate known as “fukyu-gata 1”, on Kokusai Street. October 23rd is known as “Karate Day” in Okinawa.”

https://www.youtube.com/watch?v=daCoxePBf9Q

Shorin Ryu Master Zenpo Shimabukuro (not related to Tatsuo Shimabuku) is calling out the count.