2011 in sumo
The following are the events in professional sumo during 2011. == Tournaments == === Hatsu basho === Ryogoku Kokugikan, Tokyo, 9 January – 23 January === Haru basho === Osaka Prefectural Gymnasium, Osaka, 13 March – 27 March === Natsu basho === Ryogoku Kokugikan, Tokyo, 8 May – 22 May === Nagoya basho === Aichi Prefectural Gymnasium, Nagoya, 10 July – 24 July === Aki basho === Ryogoku Kokugikan, Tokyo, 11 September – 25 September === Kyushu basho === Fukuoka International Centre, Kyushu, 13 November – 27 November == News == === January === 23: Hakuho wins the first honbasho of the year.