The 91st Emperor's Cup (第91回天皇杯) was a regular edition of an annual Japanese national cup tournament. It started on 3 September 2011 and ended on 1 January 2012 with the final at National Stadium in Tokyo, Japan, won by FC Tokyo 4–2 against Kyoto Sanga.
(*1)a total number of four games were postponed to 7 or 14 September due to tropical storm. (*2)a total number of eight games were postponed to 12 October due to event clashes of quarterfinals of 2011 J.League Cup, and November 9 was reserved for Cerezo Osaka and Hokkaido University of Education Iwamizawa Campus in case of event clashes if Cerezo entered the 2011 AFC Champions League semi-finals (but game was not postponed as Cerezo was eliminated in quarter-finals). (*3)Kashiwa Reysol's game was postponed to 21 December due to the participation in 2011 FIFA Club World Cup.
* After Miyagi prefectural qualification tournament was canceled due to 2011 Tōhoku earthquake and tsunami, Miyagi Football Association proposed that Sony Sendai represent Miyagi Prefecture since it is the most successful amateur team in the prefecture and represented the prefecture last year.[1]Japan Football Association approved the proposal.[1][2]
Note: The original schedule was 3 September 13:00 and but postponed due to tropical storm. The original venue was Naruto Otsuka Sports Park Pocarisweat Stadium but changed as a result of the postponement.[3]
^ ab天皇杯宮城県代表にソニー仙台 [Sony Sendai as the Miyagi representative for Emperor's Cup]. Sports Nippon (in Japanese). June 30, 2011. Retrieved August 26, 2011.
^"F東京はOGを守り切り、水戸に勝利" [FC Tokyo hold onto victory against Mito thanks to own goal] (in Japanese). Gekisaka. 17 December 2011. Retrieved 29 December 2011.