| 4. East Kilbride Weekly OpenEast Kilbride· May 19 – Jun 2, 2011 | May 19 – Jun 2, 2011 | Classical | 19 | 1723 | 14 |
Barcelona ESP, 4. La Lira Open Barcelona ESP· Apr 14 – Jun 2, 2011 | Apr 14 – Jun 2, 2011 | Classical | 7 | 2112 | 9 |
| ESSKE Open Individual ChampionshipLamia· 2011 | 2011 | Classical | 22 | 1718 | 18 |
| FICGS__CHESS__CLASS_B__000147FICGS· 2011 | 2011 | Classical | 6 | 1946 | 14 |
| OP-01562LSS· May 30 – 31, 2011 | May 30 – 31, 2011 | Classical | 5 | 1744 | 7 |
| OP-01564LSS· May 31, 2011 | May 31, 2011 | Classical | 5 | 1963 | 10 |
ch-UZB Major women Tashkent UZB· May 21 – 31, 2011 | May 21 – 31, 2011 | Classical | 11 | 2122 | 55 |
| RB-00115LSS· May 20 – 31, 2011 | May 20 – 31, 2011 | Classical | 7 | 1880 | 21 |
| SB-00156LSS· May 30 – 31, 2011 | May 30 – 31, 2011 | Classical | 7 | 1919 | 21 |
84. ch-St Petersburg St Petersburg RUS· May 21 – 31, 2011 | May 21 – 31, 2011 | Classical | 12 | 2470 | 59 |
| OP-01563LSS· May 31, 2011 | May 31, 2011 | Classical | 5 | 1545 | 7 |
ch-UZB Major Tashkent UZB· May 21 – 31, 2011 | May 21 – 31, 2011 | Classical | 11 | 2359 | 46 |
Winnipeg TNT May Open Winnipeg CAN· May 3 – 31, 2011 | May 3 – 31, 2011 | Classical | 23 | 1740 | 34 |
| Campionato di San Pietroburgo· May 23 – 31, 2011 | May 23 – 31, 2011 | Classical | 5 | 2513 | 7 |
| SD-00099LSS· May 29 – 30, 2011 | May 29 – 30, 2011 | Classical | 7 | 1517 | 11 |
Memorial Day Classic Los Angeles, CA USA· May 28 – 30, 2011 | May 28 – 30, 2011 | Classical | 21 | 2204 | 24 |
Charlesbourg Zukertort Charlesbourg CAN· Apr 25 – May 30, 2011 | Apr 25 – May 30, 2011 | Classical | 9 | 1869 | 12 |
| Cotswold Open· May 28 – 30, 2011 | May 28 – 30, 2011 | Classical | 25 | 1958 | 69 |
| SB-00155LSS· May 26 – 30, 2011 | May 26 – 30, 2011 | Classical | 7 | 1860 | 21 |
e2e4 Sunningdale Open Ascot ENG· May 27 – 30, 2011 | May 27 – 30, 2011 | Classical | 63 | 2048 | 195 |
Chicago Open Wheeling USA· May 26 – 30, 2011 | May 26 – 30, 2011 | Classical | 79 | 2291 | 127 |
Sherbrooke Open Sherbrooke CAN· May 28 – 29, 2011 | May 28 – 29, 2011 | Classical | 6 | 2228 | 5 |
| OP-01560LSS· May 29, 2011 | May 29, 2011 | Classical | 5 | 1888 | 9 |
Portuguese Cup Final Matosinhos POR· May 28 – 29, 2011 | May 28 – 29, 2011 | Classical | 15 | 2242 | 11 |
Goodbye Spring Lvov UKR· May 27 – 29, 2011 | May 27 – 29, 2011 | Classical | 17 | 1826 | 64 |
113 Ambelokipi Open Athens GRE· May 7 – 29, 2011 | May 7 – 29, 2011 | Classical | 42 | 1875 | 66 |
| East of Scotland Championship 2011· May 27 – 29, 2011 | May 27 – 29, 2011 | Classical | 11 | 1975 | 23 |
Orlova WGM Orlova CZE· May 21 – 29, 2011 | May 21 – 29, 2011 | Classical | 10 | 2175 | 44 |
| RA-00134LSS· May 26 – 29, 2011 | May 26 – 29, 2011 | Classical | 7 | 2082 | 21 |
63. ch-MNE Tivat MNE· May 21 – 29, 2011 | May 21 – 29, 2011 | Classical | 22 | 2279 | 90 |
TCh-SLO Ljubljana SLO· May 27 – 29, 2011 | May 27 – 29, 2011 | Classical | 63 | 2359 | 72 |
C.to Regionale Abruzzo Teramo ITA· May 21 – 29, 2011 | May 21 – 29, 2011 | Classical | 16 | 1849 | 31 |
C.to Regionale Lombardia Solaro ITA· May 27 – 29, 2011 | May 27 – 29, 2011 | Classical | 41 | 1825 | 75 |
C.to Regionale Sardegna Sardara ITA· May 21 – 29, 2011 | May 21 – 29, 2011 | Classical | 37 | 1769 | 95 |
Orlova Open Orlova CZE· May 21 – 29, 2011 | May 21 – 29, 2011 | Classical | 98 | 1842 | 412 |
ch-Siberia women Barnaul RUS· May 20 – 28, 2011 | May 20 – 28, 2011 | Classical | 16 | 2014 | 71 |
Zonal 3.3 women Tagaytay City PHI· May 24 – 28, 2011 | May 24 – 28, 2011 | Classical | 36 | 2048 | 125 |
ch-KAZ 2011 Astana KAZ· May 15 – 28, 2011 | May 15 – 28, 2011 | Classical | 14 | 2409 | 76 |
3. Kahraman Olgac Memorial Izmir TUR· May 23 – 28, 2011 | May 23 – 28, 2011 | Classical | 10 | 2425 | 44 |
| Kazakhstan Championship· May 16 – 28, 2011 | May 16 – 28, 2011 | Classical | 6 | 2526 | 13 |
ch-Moscow Final Moscow RUS· May 22 – 28, 2011 | May 22 – 28, 2011 | Classical | 8 | 2528 | 27 |
Zonal 4.1 African Tipaza ALG· May 21 – 28, 2011 | May 21 – 28, 2011 | Classical | 20 | 2122 | 88 |
ch-Siberia Men Barnaul RUS· May 20 – 28, 2011 | May 20 – 28, 2011 | Classical | 64 | 2163 | 283 |
XXX Zalakaros Open Zalakaros HUN· May 20 – 28, 2011 | May 20 – 28, 2011 | Classical | 86 | 2247 | 341 |
Chinese League Chengdu CHN· May 26 – 28, 2011 | May 26 – 28, 2011 | Classical | 56 | 2441 | 78 |
1. Alimini Village Open Alimini ITA· May 24 – 28, 2011 | May 24 – 28, 2011 | Classical | 42 | 2239 | 123 |
| MSR seniorov 2011Tatranske Matliare· May 28, 2011 | May 28, 2011 | Classical | 101 | 1764 | 276 |
| OP-01557LSS· May 27, 2011 | May 27, 2011 | Classical | 5 | 1886 | 10 |
Montcalm Open 7 2010-11 Quebec CAN· Apr 28 – May 27, 2011 | Apr 28 – May 27, 2011 | Classical | 7 | 1682 | 5 |
| OP-01556LSS· May 27, 2011 | May 27, 2011 | Classical | 5 | 1635 | 7 |